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sleet_krkn [62]
2 years ago
14

The friction red blood cells encounter when moving past each other. cardiac output: the amount of friction blood encounters duri

ng flow through blood vessels. blood pressure: the force of the blood against the vessel wall. blood viscosity: the volume of blood pumped out by one ventricle each minute.
Biology
1 answer:
White raven [17]2 years ago
8 0

The word- descriptions pair should be paired as follows;

  1. blood viscosity: the friction red blood cells encounter when moving past each other
  2. blood pressure: the force of the blood against the vessel wall.
  3. cardiac output: the volume of blood pumped out by one ventricle each minute.

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A male cardinal's red color is an example of a trait affected by natural selection. The females of the species choose mates
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Answer:

In the cardinals, if the females start using a different criterion than the color of the feather when they choose couple, most likely to happen is that decreased variation in the shades of red because no form of the trait is advantageous.

Explanation:

Options for this question are:

  • <em>Increased variation in the shades of red because the selection pressure has been relieved.</em>
  • <em>Increased variation in the shades of red because the cardinals try different ways to impress the females.</em>
  • <em>Decreased variation in the shades of red because no form of the trait is advantageous.</em>
  • <em>Decreased variation in the shades of red because the only reason for variation was selection pressure.</em>

In the context of natural selection, male cardinals court females using the coloring of their feathers as a form of sexual selection. This means that the shades of red in the feathers are a selection criterion in these birds, and the more visible shades represent an advantage.

But, if the selection criterion was not the color of the feathers, this trait would no longer represent an advantage in the competition between the males to be chosen as a mate. Instead, the trait that would determine sexual selection would be the one that experiences an increase in its variation<em>.</em>

5 0
3 years ago
What process takes oxygen into cells
lbvjy [14]

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Select the reasons why the term 'prokaryote' can be problematic.
miv72 [106K]

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__ It implies that prokaryotes existed before eukaryotes, and

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Explanation:

The prefix pro- can mean "before". By using the term prokaryote one can tend to think that procaryotes preceded eukaryotes.

Preceed as existed before them, or as an evolutionary point of view.

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1 year ago
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