Fluffy
they do have a layered look
no they actually are very white
form 1-1.5 miles above earth
they can extend
Since a secondary source is a source written after an event has occurred, I want to say that the answer is A. Hope this helped!<span />
No. However, energy is required for facilitated diffusion. Also without the membrane, the cell would collapse and wouldn't be able to function.
Answer:
air resistance or drag, (Option B)
Explanation: