When part of a glacier melts and reveals solid rock, very few plants can live in the new environment. Some grasses can grow around the cracks in rocks. Because they are some of the first organisms to live in an area, they are known as pioneer species. How can these organisms change the environment to make it more suitable for other organisms?
A.
They increase the amount of sunlight.
B.
They make water more readily available.
C.
They provide competition for resources.
D.
They contribute to the formation of soil.
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When part of a glacier melts and reveals solid rock, very few plants can live in the new environment...
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