The answer is A because the subject is responding to something that is going on outside of it, if that makes any sense :)
Hope this helps! Have a great day!
To maintain pressure within plant cells and keep structure while growth ensues. Good luck, milady. *Tips his fedora*
Mesozoic, the era contained both large reptiles and small birds/mammals. It's interesting, coming from an evolutionary biology.
Hope this helped!
They must preform photosynthesis so they can acquire energy and nutrition.
