I think it is natural selection. genetic variation also could be a factor for physical variation over the years.
Answer:
1. Email or call a website which is based on helping people with depression and etc, they'll give you support and advice and will be there for you.
2. Talk to a trusted adult, it can your family member or your teacher. They'll do the same, but sometimes they'll take the situation too far.
3. Talk to your friends. This is probably the best thing you can do since your friends are meant to comfort you.
Explanation:
Note: I've done all of these steps before, I recommend emailing a website and talking to one of the social workers there!
Answer:Getting stronger
Explanation:
With physical activity, you can get stronger and build up your muscles
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Answer:
False
Explanation:
I think. I'm so sorry if I'm wrong! I hope this helped.