1
A person who participates in environmentalism.
2
Warming that results when solar radiation is trapped by the atmosphere.
3
Streams of water that fall from a high place.
4
Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water.
5
The main photosynthetic organs of vascular plants.
6
A piece of land surrounded by water.
7
A colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
8
Large hole in the ground or in the side of a hill or mountain.
9
The space over the Earth where the sun, moon, stars, and clouds appear.
10
Large body of water completely or partly surrounded by land.
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