Answer:
active transport
Explanation:
they are using energy to move across the membrane, using energy means its active Hope this helps
Answer:
Adult cottonmouths are brown.
Explanation:
An observation is a fact that you can clearly see and don't have to guess if it is true or not.
Protons are equal to atomic number. Meaning the answer would be 64.
The answer is skeletal muscle all skeletal muscles are attached to some component of the skeleton, unlike smooth muscle which comprises hollow organs such as the intestines or blood vessels.