The electricity that we use is a secondary energy source because it is produced by converting primary sources of energy such as coal, natural gas, nuclear energy, solar energy, and wind energy, into electrical power.
Answer:
The height of the plant
Explanation:
The height of the plant (dependent variable) depends on the amount of water given (independent variable).
<span>They require sunlight to carry out photosynthesis
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The marine biome
Explanation:
Marine algae supply much of the world's oxygen supply and take in a huge amount of atmospheric carbon dioxide. The evaporation of the seawater provides rainwater for the land.