Tiny crystalline structure are usually found in magma when it cools off on earth's surface. A mixture of molten rocks, volatiles and solids that is beneath the earth's surface is called Magma. When the magma rises at the earth's surface and begins to cool off it is now called "lava".
<span>About 50 grams....................................</span>
Answer:
Mutation plays a vital part in evolution; it is the greatest source of genetic variation. In evolution, it creates a new DNA sequence for a particular gene, creating a new allele. Additionally, recombination can produce a DNA sequence (a new allele) for a specific gene through intragenic recombination.
Explanation:
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