Answer:
Fish utilise a counter-current system in order to maximise the amount of oxygen that can extracted from water. Water has a much lower oxygen content than air and as such fish need a much more efficient system that can extract a much higher proportion of oxygen from the surrounding water.
Explanation:
the first value that biosphere provides is genetics which provides variety of genes in population. the second value that biosphere provides is species which is an abundance of each species in a biological community. the last value the biosphere provides is the ecosystem with variety of ecosystems that are present in the biosphere.
Answer:
kingdom, phylum, class, order, genus, species
Explanation:
I think is D that what i think