Study of the interactions of organisms among one another and/or between their environment. Comes from them greek word "oikos" meaning house.
How to study the environment
observing, experimenting, and modeling
making a representation of an object/event in the universe.
Area on earth where life exists.
Groups of ecosystems that are found on earth identified by similar climate and organisms.
groups of organisms living in a specific place along with their environment. *smallest ecological unit.
average yearly weather conditions
Place where organisms live
the job or functional role organisms have.
"to live together"
both organisms benefit each other.
One organism benefits and the other is neither helped nor harmed.
One organism benefits and the other is harmed.
The major source of energy
feeding level found in a food chain or web.
Producers that make food from the sun/chemicals.
Consumers that obtain food from other organisms
Only eat producers
Eats carrion (dead animals)
Eats plant and animal remains called detritus
Breaks down dead organisms into nutrients for the environment
a single pathway of feeding relationships
interrelated food chains.
Active during the day
Active during the night
Active during morning and evening.
State of inactivity
Torpor during the winter.
Arctic and Antarctic, Little or NO rainfall, lots of ice/snow, life along the coasts.
Northern N. America, Asia, Europe...Few trees, mostly covered with snow, Permafrost, Bogs(containing peat moss), ponds, insects seen during summer.
Layer of ground always frozen
Coniferous forests(evergreens), long and cold winters, mild summers, mountain type animals
Temperate Deciduous Forest
Easter coast of US and Canada, Europe....Leaves drop in fall. Season and animals similar to taiga...Soil rich in humus
Leaves drop in fall.
Interior of continents, includes praries and savannas, characterized by grasses and grazing animals, most of the world's grain production.
Rainforest near equator, rain all year, has nutrient poor soil and life tends to live above ground.
Space below canopy
Rainforest in western coasts of N. America, most annual rainfall, has a great variety of plants and animals.
Southern N. america, N. Africa Australia...Low rainfall, Lots of suculent plants (fleshy)
Lack of moisture
Why are there great temperature changes during days and seasons in the desert?
Main source of drinking water.
Mixture of fresh and salt water.
affected by tides, closest inland
Layering of organisms based on exposure to air
Low tide line to edge of the continental shelf...Kelp forests
end of continental self and outward...Varietis of fish, mammals, and birds
Produces 80-90 degrees of photosynthesis (from open sea)
ocean floor, no light, high pressure, cold, hydrothermal vents.
The process of recycling nutrient chemicals throughout the biosphere.
Part of the atmosphere, tissues of organisms, needed for photosynthesis
Component of amino acids and proteins
Component of genetic molecules (DNA/RNA)
Factors influencing growth
any contamination of air, water, soil that interferes with human health, the quality of life, or the normal functioning of ecosystems.
Smoke + Fog
formed from a chemical reaction b/n sunlight and pollutants....Man made air pollution
Gray-air smog; sulfur oxides; cities with moist climates (i.e. NY)
Brown air smog
Brown air smog
cities with dry climates
Theory that too much Carbon dioxide will increase the global temperature and melt the ice caps.
product of burning fossil fuels.
What is responsible for protecting us from UV-C rays of the sun?
Affects all populations in similar ways, regardless of the population size...weather, disasters
a limiting factor that only depends on population size....competition, predation, parasitism, etc.
occurs when the individuals in a population reproduce at a constant rate.
occurs wehn a population's growth slows or stops following a period of exponential growth.
dramatic change in birth and death rates.