Answer:
nice work
Explanation:
Most are ectothermic and covered with scales. Scales protect fish from predators and parasites and reduce friction with the water. Multiple, overlapping scales provide a flexible covering that allows fish to move easily while swimming.19 Mar 2020
Active transport is the process by which dissolved molecules move across a cell membrane from a lower to a higher concentration. In active transport, particles move against the concentration gradient - and therefore require an input of energy from the cell.
I think it is a good reason cause if the water was bad or not what it claims then 100%of the people would be complaining about it
I don’t know the first two but the last one the thousands of subunits are called nucleotides