Answer:
Early cyanobacteria in stromatolites are thought to be responsible for increasing the amount of oxygen in the primeval Earth's atmosphere through their continuing photosynthesis. They were the first known organisms to photosynthesize and produce free oxygen.
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Answer:
True
Explanation:
Newton’s First law of Motion states that an object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an unbalanced force.
The way in which an organism interact with its environment make up its niche.<span />
Answer:
The answer is B
Explanation:
The definition of a light year is the unit of astronomical distance, though it is called a light year it is actually a measurement of distance, so the answer, "the time it takes light to travel 1 million km is the correct answer.
