Answer:
cell membrane is the answer
Answer:
Surviving cold temperatures and finding trees to live in
Explanation:
The major problems of tundra biome are oil, gas, mining industries
I'd mark answer B :) technically it means that you must eat enough food rich in those aminoacids because they can't be synthesized by the organism.
I believe its D. response neuron.
Hope this helps!
Love, Grace-
D. A change in the amount of polar ice will alter how ocean currents move
