1
energy that is not popularly used and is usually environmentally sound, such as solar or wind energy
2
energy resources such as windpower or solar energy that can keep producing indefinitely without being depleted
3
waste material composed primarily of naturally-occurring constituent parts, able to be broken down and absorbed into the ecosystem.
4
a large number and wide range of species of animals, plants, fungi, and microorganisms.
5
a fuel, such as coal, oil, and natural gas, produced by the decomposition of ancient
6
the part of the earth and its atmosphere in which living organisms exist or that is capable of supporting life
7
system of collecting, sorting, and reprocessing old material into usable raw materials.
8
an interconnected and symbiotic grouping of animals, plants, fungi, and microorganisms.
9
the precipitation of dilute solutions of strong mineral acids, formed by the mixing in the atmosphere of various industrial pollutants
10
a branch of science concerned with the interrelationship of organisms and their environment.
