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1

environment

which is all the conditions, circumstances, and influencers surrounding and impacting an organism

2

natural resources

those elements of nature that have value, such as timber, soil, fresh water, or a mineral deposit.

3

pollutants

substances introduced into the environment that have harmful effects or that make a resource less useful.

4

Environmental Protection Agency (EPA)

This agency encourages policy that benefits the environment and helps regulate businesses so that the pollutants they create do not overwhelm the environment.

5

pesticides

chemicals designed to kill insects, and fertilizers.

6

Erosion

the wearing away of soil, usually due to either water or wind.

7

herbicides

chemicals designed to kill certain plants, like weeds

8

Air is another essential natural resource that needs to be free of pollutants for agriculture to thrive.

In terms of its chemistry, air is 21% oxygen, 78% nitrogen and 1% a mix of other gasses. If the level of oxygen in air falls below 21%, it becomes difficult to sustain life.

9

ozone layer.

This layer of air forms a barrier between the Earth’s atmosphere (what we breathe) and the sun. It is about 15 miles above the Earth’s surface.