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BARSIC [14]
4 years ago
6

Certain kinds of shells are always found in rock layers lower than layers with plant fossils. Dinosaur fossils show up only in l

ayers above or with plant fossils what does this tell you about When these organisms lived
Biology
1 answer:
Lesechka [4]4 years ago
4 0

Answer:

This shows that once animals were on the surface there were plants for them to eat.

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<u><em>These mutations form new alleles that increase genetic variation in a population. This variation may lead to new species which increases biodiversity.</em></u>

Explanation:

Mutations are randomly occurring modifications that exist within the genetic code, leading to replication errors in DNA. DNA molecules are long-chain, helical macromolecules that store genetic material. They consist of different monomer sequences called nucleotides. In a reading frame, which contains instructions for protein production, they shape base pairs and codon sequences.

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