(( earth science ))

which event or set of events is a significant part of the geologic time scale?

a.
the evolution of the first air-breathing animals that could live on land

b.
the artistic accomplishments of the ancient greeks and romans

c.
the eruption of mt. saint helens in 1980

d.
the invention and development of computers and the internet

Explanation:

the evolution of the first air-breathing animals that could live on land

B.

the artistic accomplishments of the ancient Greeks and Romans

C.

the eruption of Mt. Saint Helens in 1980

D.

the invention and development of computers and the Internet

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.