Artificial Selection? I'm just guessing
The organ that living things such as fish use to extract dissolved oxygen from water are the gills. As land animals and humans don't have gills, we can't breath underwater and take in the oxygen from that source.
There will be a passive transport or usage of energy
Answer:
a eukaryote is DNA(genetic material)in the form of chromosomes within the nucleus and it contains all living organisms
Explanation: