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tangare [24]
3 years ago
7

What cells activate B-cells?

Biology
1 answer:
Marina CMI [18]3 years ago
8 0
The T helper cells activate B-cells.
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In the theory of plate tectonics, how should you picture the earth?
lorasvet [3.4K]

Answer:

C

Explanation:

As shown in the picture I attached to my answer, we can see all of the tectonic plates, which make up the lithosphere. The pieces do move very slightly every year.

5 0
1 year ago
Which aspect of this source should make the reader question its credibility?
Dahasolnce [82]

Answer:

The correct option is A)  It is not written by an authority

Explanation:

In the English language, credibility can be described as the quality of an object to be reliable or trusted.

A piece of written work which does not mention the name of the writer may be considered to be not reliable and trustworthy. Hence, the correct option is A.

Other options, like option D, is not correct because a peer- reviewed journal carries authentic information as the work has been rechecked by different people who have expertise on the subject.

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3 years ago
Before the beginning of the Industrial Revolution, most peppered moths found in and around Manchester, England, exhibited light-
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The correct answer is <u /><em>a</em><em>daption</em>. The particular environment in which a particular environment is exposed to gives it the characteristic or the ability to adapt. This is how a particular ecosystem works. It is the relationship of organisms within their environment that evolves through time in order for it to survive and propagate into more adapted kinds of species. 

Happy to help! 
9 0
3 years ago
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Explain how x-rays cause damage to human cells.
sergiy2304 [10]

When the human body (its cells) is exposed to radiation (X rays and gamma rays), electrons are emitted from atoms and molecules. ... ・These radicals react immediately with surrounding atoms, causing abnormal chemical reactions (or, minor damage to localized areas of cells).

7 0
3 years ago
The nature of scientific investigation
evablogger [386]

Answer: make systematic observations and carefully collect relevant evidence.Then they use logical reasoning and some imagination to develop hypotheses and explanations.

//Give thanks if helpful :)//

Explanation:

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