Answer:
that would be C, seafloor spreading occurs!
Explanation:
A I think sorry if I’m wrong
The four types of macromolecules in cells are nucleic acids, lipids, proteins, and carbohydrates.
1. They have a slimy skin in which the oxygen gets dissolved. 2. The frog have lung instead of gills 3. They have enormous no. of nerves which help them to breathe through skin
