Scientific laws do not explain why something occurs or exists or what causes it
Humans are called heterotrophs
<span>This is the condition under which he would classify them as belonging to different species - the two salamanders cannot mate to produce a fertile offspring. If these two lizards belonged to the same species, they would normally be able to breed and give birth to a fertile new "child." However, given that they are not of the same species, they cannot do such a thing, which is why this scientist classified them that way.</span>
The cell wall and chlorophyll are not found in animal cells.
Hope this helps!
-Payshence
