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lesson 6
vocabulary
Question | Answer |
---|---|
Energy Source that drives water cycle | Sun |
Has to be converted into a usable form by bacteria | Nitrogen |
Everything on earth is made of it | matter |
Matter is neither created, changed nor destroyed during a chemical reaction, only rearranged | Law of Conservation of Matter |
Energy cannot be created or destroyed | Law of Conservation of Energy |
As energy is converted, energy is lost in the form of heat | Second Law of thermodynamics |
soybeans are an example of | Ntrate producing plant |
only 3% is fresh | water |
Detergents contain this | phosphate |
Excess phosphate and nitrates in ponds, lakes and streams cause | algal blooms |
Contributes to global warming because trees filter carbon dioxide from the air | carbon cycle |
CO2 + H20 + sunlight -> O2 + sugar + energy | photosynthesis |
Helps build proteins which are needed to build cells | nitrogen |