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Ecosystem 2
Vocab
Question | Answer |
---|---|
What change in the ecosystem can cause many animals to die and lose their homes? | Fire |
How can you keep water clean? | Do not dump wastes into lakes and rivers |
Clean Water Act | a law that requires states to clean polluted waters to prevent further water pollution |
Overpopulation | Too many of one kind of living thing |
What do cars and factories cause? | air pollution |
What resource can never run out? | sunlight |
Smog | this happens when waste gases combine with water in the air |
What problem affects Earth's air, water and land? | pollution |
acid rain | this occurs when acids mix with water in the air and then fall to Earth |
drought | a long period of time with little or no precipitation |
Clean Air Act | a law that sets limits of different kinds of air pollution |