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Terms in this set (56)
A potentially renewable resource
A renewable resource, human action has little to do with the life-span of this resource.
a nonrenewable resource and a fossil fuel
a nonrenewable resource and a metallic mineral
a nonrenewable resource and a nonmetallic mineral
the ecosystem with the worlds highest net primary productivities per unit area is
which of the following statements regarding developed countries and developing countries is true?
developed countries generally have safer water supplies
human population growth rate 3.5%, how many years will it take for the population to double in size?
Human population growth over the last 4,000 years can be best described as
Which of the following is an example of a non-point pollution source?
Runoff of nitrogen fertilizers from an agricultural area
Which of following choices contains only fossil fuels?
coal, natural gas, oil
The amount per unit volume of air, soil, water, or body weight.
Method of dealing with pollution in which receives relatively minor funding
How long a pollution remains in the air, soil, water, or body
Most efforts to improve the environmental quality have focused on this
Capable of being decomposed by organisms, such as bacteria
Nonrenewable resources are
finite in supply
The degradation of spaces on and surrounding earth which are outside of the domain/ownership/rule of any country is known as:
the tragedy of the commons
Each of the following is an ecological service provided by marine biodiversity/ecosystems EXCEPT for:
ground water recharage
the greatest source of water pollution in terms of total mass is:
which of the following is not one of the common phosphorus reservoirs in the ecosystem?
A possible explanation of observations
A well tested and widely accepted idea, principle, or model
contains the chosen variable that is changed in a known way
facts collected by making observations
controlled experiment group in which no variable is changed
inorganic nitrogen-containing ions are taken in by the plants and then converted into organic molecules through
ammonia is converted to nitrate and finally to nitrogen gas through the process of
the major plant nutrient most likely to be a limiting factor is
Humans are most likely to alter the earth's thermostat through their impact on the compound
the level below which a potentially renewable resource can be used without reducing its available supply throughout the world or in a particular area
The first law of energy states that:
energy is neither created nor destroyed
which of the following ecosystems has the highest average of primary productivity?
Swamps and marshes
Earth is essentially a(n) system regarding matter and a(n) system regarding energy
The major renewable form of energy used in developing countries is
The pyramid which best explains why there are typically only four or five links in a food chain is pyramid of
the amount of energy transferred from an organism on one trophic level to the next trophic level is approx. _%
Fossils and radioactive dating indicate that___ major mass extinctions have taken place in the past 500 million years, with the most recent mass extinction taking place approx.___ years ago
5; 65 million
the greatest threat to most species is
reduction of habitats
the form of nitrogen most usable to plants is
the max population of a particular species that a given habitat can support over a given period of time is
Increases the amount of carbon dioxide in the atmosphere
If there are 500,000 kilocalories in the producer level, how many kcal will become incorporated in the tissues of the secondary consumers?
The consumer group represented by the particular bar labeled Y is known as the
The biggest stores for carbon are found in these "sinks"
The ocean floor and continents
the energy of the sun is primarily the result of
the fusion of two hydrogen atoms to form helium
What is net primary productivity?
The rate at which energy for use by consumers is stored in biomass
The shorter the food chain, the
the smaller the loss of usable energy
What is not an essential part of biological evolution?
Ammonium ions are converted to nitrite ions and nitrate ions through the process of
When organisms die, their nitrogenous organic compounds are converted to simple inorganic compounds such as ammonia through the process of
Nitrogen gas is converted to ammonia through
A group of individuals of the same species occupying a given area at the same time is called a
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