Breaking down material such as rocks and wood
Cells are small because at their size, the ratio of surface area to volume is most efficient.
Answer:
I think it is D it makes sense
Mammalia - mammals
<span>Aves - birds </span>
<span>Amphibia - amphibians </span>
<span>Reptilia - reptiles </span>
<span>Chondrichthyes - sharks, stingrays</span>