B. Crab
is your answer
An crab has an exoskeleton
hope this helps
ANSWER:
Needed to form cell membranes
I hope I was of help to you :)
Answer: When the plant has enough water in its cells the guard cells swell up and open the stomata. When the plant isn't getting enough water the guard cells can't swell and the stomata stay closed, so the plant doen's lose water. But if the stomata are closed photosynthesis can't happen and eventually the plant might starve.
Explanation:
Answer: An elevator coming to a stop would reduce its speed and velocity, and have a negative acceleration
Hope it helps :)
