Answer:
Cetacea it's the correct answer!
Answer:
Higher than normal because yo have less plasma blood volume.
Plasma blood volume is mostly water and plays an important role in maintain the electrolyte concentration. Less plasma leads to dehydration.
Answer: Energy is passed up a food chain or web from lower to higher trophic levels. This loss of energy explains why there are rarely more than four trophic levels in a food chain or web. Sometimes there may be a fifth trophic level, but usually there's not enough energy left to support any additional levels.
Explanation: :) Hope it helps
B because in the picture underneath digital the original and copy look the same therefore there less likely to change when copied
