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ohaa [14]
3 years ago
14

During the ____, all but one of the major marine phyla appeared. Question 1 options: Cambrian explosion Antler Orogeny Caledonia

n Orogeny Ouachita Orogeny
Biology
1 answer:
Zanzabum3 years ago
7 0

Answer:

Cambrian explosion

Explanation:

Cambrian explosion is a geological event that happened during the Cambrian age (541 million years ago). In this period, most of the animal phyla (including marine) appeared and their geological record is preserved in the form of fossils. The period lasted for 13-25 million years. Before this period, the organisms were very simple. They were mostly unicellular in nature and were living in the form of colonies.

The remaining three options are incorrect. They are tectonic events that reflect movement of continents in different geological times. None of them resulted in the diversification of (marine) animal phyla.

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anzhelika [568]

Given what we know, we can confirm that the process of differentiation alters the cells by changing the expression of genes in a cell.

<h3>What is differentiation?</h3>
  • differentiation is when a cell becomes specialized.
  • This is the case with heart or digestive cells.
  • Since all cells carry the same DNA, this does not account for differentiation.
  • Instead, this is achieved by changing the expression of genes in a cell.

Therefore, we can confirm that differentiation is what we refer to as a cell becoming specialized in one way or function, such is the case with heart cells or digestive cells, and since all cells in the body carry the same DNA, this is done by changing the way in which the cells express their genes in the DNA.

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8 0
2 years ago
In a ____ fault, the hanging wall moves up relative to the footwall.
gregori [183]

Answer:

D. normal

Explanation:

normal fault

If the hanging wall moves down relative to the footwall, the fault is a normal fault. Normal faults are caused by tensional stress, or stress that pulls rocks apart.

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4 0
2 years ago
What is the process where organisms that are better suited to their environment reproduce and pass on their genes more successfu
maxonik [38]

Answer:

Natural selection

Explanation:

Natural populations have variations. Organisms of a population have various genetic traits. Some of these genetic variations make the organisms better suited to the prevailing environmental conditions. These organisms are more likely to produce more progeny. Over generations, the frequency of the beneficial genetic traits increases in the population due to the higher reproductive success of the organisms with these genetic traits.

This process of differential fitness of organisms of a population where the organisms with adaptive genetic traits have survival and reproductive benefits is called natural selection.

8 0
3 years ago
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Answer:

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