SCIENCE

4. Factor^A nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it.
5. Footprint^A measure of human demand on the Earth’s ecosystems.
8. of an ecosystem which is determined by the variety of species of plants and animals.
11. Factor^Any living component that affects another organism.
13. Fission^Process in which heavy atomic nuclei split into smaller, light nuclei.
14. Effect^Natural heating of Earth’s surface by atmospheric gases. CO2, O3, CFC’s, NO2.
15. material derived from living or recently living organisms.
17. Climate Change^Rise in global temperature which is due to increases in CO2 from deforestation and burning of fossil fuels.
18. Resource^Natural resource such as fresh air and most groundwater that can be used indefinitely without causing a reduction in the available supply.
19. Fuel ^Nonrenewable energy resource formed over geologic time from the compression and partial decomposition of organisms that lived millions of years ago.

1. complex of a community of organisms and its environment functioning as an ecological unit.
2. (CFC’s)^Compound used in refrigerants and making plastics which can deplete the ozone.
3. Capacity^Maximum population a species can support.
6. Factors^Factor that limits the growth, abundance, or distribution of the population of an ecosystem.
7. of population living in areas with greater than 2,500 (10,000).
9. of trees from an area without adequate replanting, often using clear cutting which results in loss of topsoil and water pollution.
10. Energy^ Involves global management of Earth’s natural resources to ensure that current and future energy needs will be met without harming the environment.
12. an organic compound containing only carbon and hydrogen and often occurring in petroleum, natural gas, and coal.
16. energy^Energy produced from Earth’s own internal steam and hot water.