They are formed naturally, not organic, solid with a definite volume and shape, have a unique composition, and the atoms are arranged in a pattern called a crystal structure. They are naturally occurring solid, they are made up of a mixture of minerals, smaller rock fragments, organic matter, or glass.
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Answer:
D. The oldest rock is found in the bottom layer of a rock formation.
Explanation:
Answer: Hello, Two sets of chromosomes in each sells.....
Explanation: A common form of aneuploidy is trisomy, or the presence of an extra chromosome in cells. ... Cells with one additional set of chromosomes, for a total of 69 chromosomes, are called triploid . Cells with two additional sets of chromosomes, for a total of 92 chromosomes, are called tetraploid.