DescriptionBiotic components, or biotic factors, can be described as any living component that affects another organism or shapes the ecosystem. So the answer would be 1 an 2
Answer:
burning of coal
Explanation:
Coal contain carbon which combines with oxygen.
Sea-floor spreading ovcurs at divergent boundaries which statement best identifies the geologic process taking place at the point where sea floor spreading occurs
1) The answer is <span>bluegreen algae
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Bluegreen algae or cyanobacteria <span>are thought to have started life on earth because they converted the atmosphere that didn't have a lot of oxygen, into an atosphere with enough oxygen to exist life. That </span>oxygen was a product of their photosynthesis.
2) The answer is lightning.
<span>By Primordial Soup Theory, life began as a result of the combination of chemicals from the atmosphere and lighning (a form of energy) to make amino acids. Aminoacids are necessary to build proteins, and proteins are necessary for all the organisms.</span>