APES Final Exam Review
Terms in this set (262)
Pertaining to factors or things that are separate and independent from living things; nonliving.
Any compound that releases hydrogen ions when dissolved in water. Also, a water solution that contains a surplus of hydrogen ions.
a soil horizon; the layer below the O layer is called the A layer. The A layer is formed of weathered rock, with some organic material; often referred to as topsoil.
a basic substance; chemically, a substance that absorbs hydrogen ions or releases hydroxyl ions; in reference to natural water, a measure of the base content of the water.
an underground layer of porous rock, sand, or other material that allows the movement of water between layers of nonporous rock or clay. Aquifers are frequently tapped for wells.
land that's fit to be cultivated.
the part of the mantle that lies just below the lithosphere.
the gaseous mass or envelope surrounding a celestial body, especially the one surrounding the Earth, which is retained by the celestial body's gravitational field.
a long, relatively narrow island running parallel to the mainland-built up by the action of waves and currents and serving to protect the coast from erosion by surf and tidal surges.
any weathering that's caused by the activities of living organisms.
living or derived from living things.
a soil horizon; B receives the minerals and organic materials that are leached out of the A horizon.
the result of chemical interaction with the bedrock that is typical of the action of both water and atmospheric gases.
a soil horizon, horizon C is made up of larger pieces of rock that have not undergone much weathering.
the finest soil, made up of particles that are less than 0.002 mm in diameter.
the vertical movement of a mass of matter due to heating and cooling; this can happen in both the atmosphere and Earth's mantle.
air currents caused by the vertical movement of air due to atmospheric heating and cooling.
a plate boundary where two plates are moving toward each other.
an erosion-resistant marine ridge or mound consisting chiefly of compacted coral together with algal material and biochemically deposited magnesium and calcium carbonates.
The observed effect of the Coriolis force, especially the deflection of an object moving above the Earth, rightward in the Northern Hemisphere, and leftward in the Southern Hemisphere.
the practice of alternating the crops grown on a piece of land - for example, corn one year, legumes for two years, and then back to corn.
a usually triangular alluvial deposit at the mouth of a river.
a plate boundary at which plates are moving away from each other. This causes an upwelling of magma from the mantle to cool and form new crust.
a region of the ocean near the equator, characterized by calms, light winds, or squalls.
a method of supplying irrigation water through tubes that literally drip water onto the soil at the base of each plant.
the result of vibrations (often due to plate movements) deep in the Earth that release energy. They often occur as two plates slide past one another at a transform boundary.
a climate variation that takes place in the tropical Pacific about every three to seven years, for a duration of about one year.
the process of soil particles being carried away by wind or water. Erosion moves the smaller particles first and hence degrades the soil to a coarser, sandier, stonier texture.
the part of the wide lower course of a river where its current is met by the tides.
the place where two plates abut each other.
the development and introduction of new varieties of (mainly) wheat and rice that has increased yields per acre dramatically in countries since the 1960s.
the phenomenon whereby the Earth's atmosphere traps solar radiation, caused by the presence in the atmosphere of gases such as carbon dioxide, water vapor, and methane that allow incoming sunlight to pass through, but absorb heat radiated back from the Earth's surface.
a system of vertical and horizontal air circulation predominating in tropical and subtropical regions and creating major weather patterns.
the water from which a river rises; a source.
a layer of soil.
the dark, crumbly, nutrient-rich material that results from the decomposition of organic material.
hurricane (typhoon, cyclone)
a severe tropical cyclone originating in the equatorial regions of the Atlantic Ocean or Caribbean Sea or eastern regions of the Pacific Ocean, traveling north, northwest, or northeast from its point of origin, and usually involving heavy rains.
the molten core of the Earth.
a high-speed, meandering wind current, generally moving from a westerly direction at speeds often exceeding 400 km (250 miles) per hour at altitudes of 15 to 25 km (10 to 15 miles).
when soil becomes water-logged and then dries out, and salt forms a layer on its surface.
a cooling of the ocean surface off the western coast of South America, occurring periodically every 4 to 12 years and affecting Pacific and other weather patterns.
the outer part of the Earth, consisting of the crust and upper mantle, approximately 100 km (62 miles) thick.
soil composed of a mixture of sand, clay, silt, and organic matter.
the layer of the Earth between the crust and the core.
the cultivation of a single crop on a farm or in a region or country; a single, homogeneous culture without diversity or dissension.
the uppermost horizon of soil. It is primarily made up of organic material, including waste from organisms, the bodies of decomposing organisms, and live organisms.
physical (mechanical) weathering
any process that breaks rock down into smaller pieces without changing the chemistry of the rock; typically wind and water.
the edges of tectonic plates.
when water rights are given to those who have historically used the water in a certain area.
the low-rainfall region that exists on the leeward (downwind) side of a mountain range. This rain shadow is the result of the mountain range's causing precipitation on the windward side.
a bloom of dinoflagellates that causes reddish discoloration of coastal ocean waters. Certain dinoflagellates of the genus Gonyamfox produce toxins that kill fish and contaminate shellfish.
The bedrock, which lies below all of the other layers of soil, is referred to as the R horizon.
the right, as to fishing or to the use of a riverbed, of one who owns riparian land (the land adjacent to a river or stream).
the process in which soil becomes saltier and saltier until, finally, the salt prevents the growth of plants. Salinization is caused by irrigation because salts brought in with the water remain in the soil as water evaporates.
the coarsest soil, with particles 0.05,2.0 mm in diameter.
soil with particles 0.002,0.05 mm in diameter.
the atmospheric pressure conditions corresponding to the periodic warming of El Nino and cooling of La Nina.
in tectonic plates, the site at which an oceanic plate is sliding under a continental plate.
a layer in a large body of water, such as a lake, that sharply separates regions differing in temperature, so that the temperature gradient across the layer is abrupt.
the outermost shell of the atmosphere, between the mesosphere and outer space, where temperatures increase steadily with altitude.
the A layer of soil is often referred to as topsoil and is most important for plant growth.
the more or less constant winds blowing in horizontal directions over the Earth's surface, as part of Hadley cells.
also known as transform faults, boundaries at which plates are moving past each other, sideways.
a cyclonic storm having winds ranging from approximately 48 to 121 km (30 to 75 miles) per hour.
a process in which cold, often nutrient-rich, waters from the ocean depths rise to the surface.
an opening in the Earth's crust through which molten lava, ash, and gases are ejected.
the region draining into river system or other body of water.
countries that have a renewable annual water supply of less than 1,000 m3 per person.
countries that have a renewable annual water supply of about 1,000,2,000 m3 per person.
the day-to-day variations in temperature, air pressure, wind, humidity, and precipitation mediated by the atmosphere in a given region.
the gradual breakdown of rock into smaller and smaller particles, caused by natural chemical, physical, and biological factors.
a lowland area, such as a marsh or swamp, that is saturated with moisture, especially when regarded as the natural habitat of wildlife.
the process in which plants absorb ammonium (NH3), ammonia ions (NH4+), and nitrate ions (NO3) through their roots.
an organism that obtains organic food molecules without eating other organisms or substances derived from other organisms. autotrophs use energy from the sun or from the oxidation of inorganic substances to make organic molecules from inorganic ones.
the accumulation of a substance, such as a toxic chemical, in various tissues of a living organism.
the process by which the concentration of toxic substances increases in each successive link in the food chain.
the part of the Earth and its atmosphere in which living organisms exist or that is capable of supporting life.
an animal that only consumes other animals.
an organism such as a bacterium or protozoan, that obtains its nourishment through the oxidation of inorganic chemical compounds, as opposed to photosynthesis.
a stable, mature community in a successive series that has reached equilibrium after having evolved through stages and adapted to its environment.
the process of burning.
formed from populations of different species occupying the same geographic area.
the process that occurs when two different species in a region compete and the better adapted species wins.
an organism that must obtain food energy from secondary sources, for example, by eating plant or animal matter.
bacteria or fungi that absorb nutrients from nonliving organic matter like plant material, the wastes of living organisms, and corpses. They convert these materials into inorganic forms.
the process by which specialized bacteria (mostly anaerobic bacteria) convert ammonia to NOy NO2, and N2 and release it back to the atmosphere.
organisms that derive energy from consuming nonliving organic matter.
transition in species composition of a biological community, often following ecological disturbance of the community; the establishment of a biological community in any area virtually barren of life.
the condition in which, at ecosystem boundaries, there is greater species diversity and biological density than there is in the heart of ecological communities.
the structure obtained if we organize the amount of energy contained in producers and consumers in an ecosystem by kilocalories per square meter, from largest to smallest.
to convert or change into a vapor.
change in the genetic composition of a population during successive generations as a result of natural selection acting on the genetic variation among individuals and resulting in the development of new species.
being extinct or the process of becoming extinct.
a succession of organisms in an ecological community that constitutes a continuation of food energy from one organism to another as each consumes a lower member and, in turn, is preyed upon by a higher member.
a complex of interrelated food chains in an ecological community.
Gross Primary Productivity
the amount of sugar that the plants produce in photosynthesis and subtracting from it the amount of energy the plants need for growth maintenance, repair, and reproduction.
the area or environment where an organism or ecological community normally lives or occurs.
when the size of an organism's natural habitat is reduced, or when development occurs that isolates a habitat.
an organism that cannot synthesize its own food and is dependent on complex organic substances for nutrition.
species that originate and live, or occur naturally, in an area or environment.
an introduced, normative species.
a species whose very presence contributes to an ecosystem's diversity and whose extinction would consequently lead to the extinction of other forms of life.
law of conservation of matter
states that matter can neither be created nor destroyed.
a symbiotic relationship in which both species benefit.
the process by which, according to Darwin's theory of evolution, only the organisms best adapted to their environment tend to survive and transmit their genetic characteristics in increasing numbers to succeeding generations, while those less adapted tend to be eliminated.
net Primary Productivity (NPP)
the amount of energy that plants pass on to the community of herbivores in an ecosystem.
the total sum of a species' use of the biotic and abiotic resources in its environment.
the process in which soil bacteria convert ammonium (NH4+) to a form that can be used by plants; nitrate, or NO3.
the conversion of atmospheric nitrogen into compounds, such as ammonia, by natural agencies or various industrial processes.
organisms that consume both producers and primary consumers.
a symbiotic relationship in which one member is helped by the association and the other is harmed.
the process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct.
organisms in the first stages of succession.
a group of organisms of the same species that live in the same area.
when one species feeds on another.
this category includes organisms that consume producers (plants and algae).
when ecological succession begins in a virtually lifeless area, such as the area behind a moving glacier.
an organism that is capable of converting radiant energy or chemical energy into carbohydrates.
when a species occupies a smaller niche than it would in the absence of competition.
a place where a large quantity of a resource sits for a long period of time.
the process in which animals (and plants!) breathe and give off carbon dioxide from cellular metabolism.
organisms that consume primary consumers.
organisms that are capable of interbreeding with one another and incapable of breeding with other species.
close, prolonged associations between two or more different organisms of different species that may, but do not necessarily benefit the members.
organisms that consume secondary consumers or other tertiary consumers.
the act or process of transpiring, or releasing water vapor, especially through the stomata of plant tissue or the pores of the skin.
each of the feeding levels in a food chain.
graphical representations of populations' ages.
the fraction of solar energy that is reflected back into space.
the amount that the population would grow if there were unlimited resources in its environment.
birth rate (crude birth rate)
the number of live births per 1,000 members of the population in a year.
the maximum population size that can be supported by the available resources in a region.
death rate (crude death rate)
is equal to the number of deaths per 1,000 members of the population in a year.
demographic transition model
a model that's used to predict population trends based on the birth and death rates as well as economic status of a population.
the amount of the Earth's surface that's necessary to supply the needs of, and dispose of the waste from a particular population.
the movement of individuals out of a population.
the random fluctuations in the frequency of the appearance of a gene in a small isolated population, presumably owing to chance, rather than natural selection.
the movement of individuals into a population.
organisms that reproduce later in life, produce fewer offspring, and devote significant time and energy to the nurturing of their offspring.
logistic population growth
when populations are well below the size dictated by the carrying capacity of the region they live in, they will grow exponentially, but as they approach the carrying capacity, their growth rate will decrease and the size of the population will eventually become stable.
the number of individuals of a population that inhabit a certain unit of land or water area.
replacement birth rate
the number of children a couple must have in order to replace themselves in a population.
organisms that reproduce early in life and often and have a high capacity for reproductive growth.
total fertility rate
the number of children an average woman will bear during her lifetime; this information is based on an analysis of data from preceding years in the population in question.
when trees and crops are planted together, creating a mutualistic symbiotic relationship between them.
the raising of fish and other aquatic species in captivity for harvest.
a fishing technique in which the ocean floor is literally scraped by heavy nets that smash everything in their path.
any other species of fish, mammals, or birds that are caught that are not the target organism.
fish farming in which fish are caught in the wild and not raised in captivity for consumption.
the removal of all of the trees in an area.
the management or regulation of a resource so that its use does not exceed the capacity of the resource to regenerate itself.
the day-to-day use of environmental resources as food, clothing, and housing.
contour farming a process in which rows of crops are plowed across the hillside; this prevents the erosion that can occur when rows are cut up and down on a slope.
the removal of trees for agricultural purposes or purposes of exportation.
nets that are dragged through the water and indiscriminately catch everything in their path.
the value of natural resources.
the industry or occupation devoted to the catching, processing, or selling of fish, shellfish, or other aquatic animals.
open or forested areas built at the outer edge of a city.
intercropping (also called strip cropping)
is the practice of planting bands of different crops across a hillside.
in fishing, the use of long lines that have baited hooks and will be taken by numerous aquatic organisms.
poor nutrition that results from an insufficient or poorly balanced diet.
an area in which a particular mineral is concentrated, mining,the excavation of the Earth for the purpose of extracting ore or minerals.
biotic and abiotic natural ecosystems.
resources that are often formed by very slow geologic processes, so we consider them incapable of being regenerated within the realm of human existence.
refers to when farmers plant seeds without using a plow to turn the soil.
old growth forest
one that has never been cut; these forests have not been seriously disturbed for several hundred years.
when grass is consumed by animals at a faster rate than it can regrow.
the maintenance of a species or ecosystem in order to ensure their perpetuation, with no concern as to their potential monetary value
refers to resources, such as plants and animals, which can be regenerated if harvested at sustainable yields.
second growth forests
areas where cutting has occurred and a new, younger forest has arisen.
the removal of select trees in an area; this leaves the majority of the habitat in place and has less of an impact on the ecosystem.
when mature trees are cut over a period of time (usually10,20 years); this leaves mature trees, which can reseed the forest, in place.
the management of forest plantations for the purpose of harvesting timber.
when an area of vegetation is cut down and burned before being planted with crops.
fires that typically burn only the forest's underbrush and do little damage to mature trees. Surface fires actually serve to protect the forest from more harmful fires by removing underbrush and dead materials that would burn quickly and at high temperatures.
piles of gangue, which is the waste material that results from mining.
traditional subsistence agriculture
when each family in a community grows crops for themselves and rely on animal and human labor to plant and harvest crops.
creating flat platforms in the hillside that provide a level planting surface, which reduces soil runoff from the slope.
also known as plantations, these are planted and managed tracts of trees of the same age that are harvested for commercial use.
the broad category under which selective cutting and shelter-wood cutting fall; selective deforestation.
the use of devices, such as solar panels, to collect, focus, transport, or store solar energy.
the cleanest-burning coal; almost pure carbon.
the unit used to describe the volume of fossil fuels.
the second-purest form of coal.
the form petroleum takes when in the ground.
the capacity to do work.
a nuclear reaction in which an atomic nucleus, especially a heavy nucleus such as an isotope of uranium, splits into fragments, usually two fragments of comparable mass, releasing from 100 million to several hundred million electron volts of energy.
a hydrocarbon deposit, such as petroleum, coal, or natural gas, derived from living matter of a previous geologic time and used for fuel.
First Law of Thermodynamics
says that energy can neither be created nor destroyed; it can only be transferred and transformed.
a waste product produced by the burning of coal.
the amount of time it takes for half of a radioactive sample to disappear.
Hubbert peak (peak oil)
an influential theory that concerns the long-term rate of conventional oil (and other fossil fuel) extraction and depletion. It predicts that future world oil production will soon reach a peak and then rapidly decline.
power generated using water.
the energy of motion.
the least pure coal.
the process of fusing two nuclei.
the rocks and Earth that is removed when mining for a commercially valuable mineral resource.
passive solar energy collection
the use of building materials, building placement, and design to passively collect solar energy that can be used to keep a building warm or cool.
peak oil (Hubbert peak)
an influential theory that concerns the long, term rate of conventional oil (and other fossil fuel) extraction and depletion. It predicts that future world oil production will soon reach a peak and then rapidly decline.
a hydrocarbon that forms as sediments are buried and pressurized.
photovoltaic cell (PV cell)
a semiconductor device that converts the energy of sunlight into electric energy.
energy at rest, or stored energy.
an estimate of the amount of fossil fuel that can be obtained from reserve.
devices containing alkaline substances that precipitate out much of the sulfur dioxide from industrial plants.
Second Law of Thermodynamics
says that the entropy (disorder) of the universe is increasing. One corollary of the Second Law of thermodynamics is the concept that, in most energy transformations, a significant fraction of energy is lost to the universe as heat.
involves the removal of the Earth's surface all the way down to the level of the mineral seam.
the third purest form of coal.
involves the sinking of shafts to reach underground deposits. In this type of mining, networks of tunnels are dug or blasted and humans enter these tunnels in order to manually retrieve the coal.
a group of modern windmills.
acid rain, acid hail, acid snow; all of which occur as a result of pollution in the atmosphere.
the effect caused by a short exposure to a high level of toxin.
a platinum, coated device that oxidizes most of the VOCs and some of the CO that would otherwise be emitted in exhaust, converting them to CO2.
when materials, such as plastic or aluminum, are used to rebuild the same product. An example of this is the use of the aluminum from aluminum cans to produce more aluminum cans.
a process that allows the organic material in solid waste to be decomposed and reintroduced into the soil, often as fertilizer.
when the signs and symptoms of an illness can be attributed to a specific infectious organism that resides in the building.
an effect that results from long,term exposure to low levels of toxin.
deep well injection
drilling a hole in the ground that's below the water table to hold waste.
occurs when infection causes a change in the state of health.
a process in which an organism is exposed to a toxin at different concentrations, and the dosage that causes the death of the organism is recorded.
the result of graphing a dose-response analysis.
the point at which 50 percent of the test organisms show a negative effect from a toxin.
an intensification of the Greenhouse Effect due to the increased presence of heat-trapping gases in the atmosphere.
gray smog (industrial smog)
smog resulting from emissions from industry and other sources of gases produced by the burning of fossil fuels, especially coal.
any waste that poses a danger to human health; it must be dealt with in a different way from other types of waste.
urban areas that heat up more quickly and retain heat more than do nonurban areas.
high-level radioactive waste
radioactive wastes that produce high levels of ionizing radiation.
industrial smog (gray smog)
smog resulting from emissions from industry and other sources of gases produced by the burning of fossil fuels.
the result of a pathogen invading a body.
the point at which 50 percent of the test organisms die from a toxin.
the liquid that percolates to the bottom of a landfill.
low-level radioactive waste
radioactive wastes that produce low levels of ionizing radiation.
any noise that causes stress or has the potential to damage human health.
non-point source pollution
pollution that does not have a specific point of release, open,loop recycling,when materials are reused to form new products.
the thinning of the ozone layer over Antarctica (and to some extent, over the Arctic).
bacteria, virus, or other microorganisms that can cause disease.
when photochemical smog, NOx compounds, VOCs, and ozone combine to form smog with a brownish hue.
point source pollution
a specific location from which pollution is released; an example of a point source location is a factory where wood is being burned.
any substance that has an LD50, of 50 mg or less per kg of body weight.
in a sewage treatment plant, the initial filtration that is done to remove debris such as stones, sticks, rags, toys, and other objects that were flushed down the toilet.
pollutants that are released directly into the lower atmosphere.
when physically treated sewage water is passed into a settling tank, where suspended solids settle out as sludge; chemically treated polymers may be added to help the suspended solids separate and settle out.
calculating risk, or the degree of likelihood that a person will become ill upon exposure to a toxin or pathogen.
using strategies to reduce the amount of risk (the degree of likelihood that a person will become ill upon exposure to a toxin or pathogen).
pollutants that are formed by the combination of primary pollutants in the atmosphere.
the biological treatment of wastewater in order to continue to remove biodegradable waste.
sick building syndrome
when the majority of a building's occupants experience certain symptoms that vary with the amount of time spent in the building.
the solids that remain after the secondary treatment of sewage.
a tank filled with aerobic bacteria that's used to treat sewage.
can consist of hazardous waste, industrial solid waste, or municipal waste. Many types of solid waste provide a threat to human health and the environment.
non-moving sources of pollution, such as factories.
a program funded by the federal government and a trust that's funded by taxes on chemicals; identifies pollutants and cleans up hazardous waste sites.
the dosage level of a toxin at which a negative effect occurs.
the degree to which a substance is biologically harmful.
any substance than is inhaled, ingested, or absorbed at dosages sufficient to damage a living organism.
ozone that exists in the trophosphere.
U.S. Noise Control Act
gave the EPA power to set emission standards for major sources of noise, including transportation, machinery, and construction.
the carrier organism through which pathogens can attack.
any water that has been used by humans. This includes human sewage, water drained from showers, tubs, sinks, dishwashers, washing machines, water from industrial processes, and storm water runoff.
Waste-to-Energy (WTE) program
when the energy released from waste incineration is used to generate electricity.
a fiscal policy that lowers taxes on income, including wages and profit, and raises taxes on consumption, particularly the unsustainable consumption of non-renewable resources.
when companies are allowed to buy permits that allow them a certain amount of discharge of substances into certain environmental outlets. If they can reduce their amount of discharge, they are allowed to sell the remaining portion of their permit to another company.
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