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sp2606 [1]
3 years ago
5

How does the muscles grow and get stronger, and what causes this?

Health
1 answer:
Vlada [557]3 years ago
3 0
The 650 skeletal muscles in the human body contract when they receive signals from motor neurons, which are triggered from a part of the cell called the sarcoplasmic reticulum. Motor neurons tell your muscles to contract and the better you become at having those signals tell your muscles to contract, the stronger you can get.
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Psychology is the scientific study of human and animal behavior. Explain the terms scientific and behavior in relation to psycho
user100 [1]
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I have no idea what I just typed but I hope it helps -,- you can just build off of it if you feel like it’s accurate
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3 years ago
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Jenny has a big exam coming up tomorrow. She doesn't think she has studied enough to get a good grade. What's the best way that
ZanzabumX [31]

Answer:

B. Study until bedtime, wake up early, eat breakfast, and walk to school with her best friend

Explanation:

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8 0
3 years ago
Which disease did vaccinations and epidemiological success eradicate in 1977?
adoni [48]
Smallpox is the only human disease to have been eradicated by vaccination. The last case was in <span>Somalia in 1977 and was successfully eradicated. Now we have been smallpox free for 30 years!</span>
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3 years ago
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marshall27 [118]

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2 years ago
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Gemiola [76]

Answer:

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because iron is an metal

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3 years ago
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