Answer:
Metamorphic Rocks
Explanation:
Metamorphic rocks tend to form, when rocks are exposed to high pressure and heat, they commonly form when all of this happens together.
Answer: Use this link to find out the answer to your question - https://populationeducation.org/stage-1-demographic-transition-model/ (If you can't click it then just copy-paste it in a new tab)
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We can estimate the age of an open cluster of stars by examining (The turnoff point of the cluster)
Answer: A) switch from crops to livestock.
Hope this helps, sorry if I got this wrong.