How is the earthworm beneficial to the formation of soil? A)
They eat soil.
B)
They digest soil.
C)
They mix soil.
D)
They aerate soil.
E)
All of the above.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.