Answer:
b
Explanation:
The R in RNA stands for Ribosomes which are proteins.
Answer:
Mutualism
Explanation:
both humans and plants benefit from it because we breath out carbon dioxide
Yes it is an example of friction.Also a sled sliding across the snow or ice
If the Na+ voltage-gated channels in a muscle cell open, the Na (sodium) ions rush inside the muscle cell and makes the cell more positive as Na ions carry positive charge on it. Due to the entry of positively charged ions inside the cell, the cell becomes less negative and more positive. This is called depolarization of cell.
