<span>Different pressure levels
Hope this helps and please award brainly :)
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Answer:
The evidence from the eruption helps scientists study past climate changes and compare them to modern changes.
Explanation:
Essentially, they like to study an area of difference so that they can see what changes in that situation; and they are able to understand <em>what </em> would change in a study sample (letting them know what measures to look for)
They cannot hibernate in winter
Hot packs or a med used for reducing swelling
Answer:
( A. joints between long bones )
