Skin cells are made of proteins, water, and fat. But brain cells are only made up of amino acids, which ca make protein.<span />
The answer is mitochondria.
Severe dehydration resulting in hypoperfusion of the placenta.
The answer is Speciation cannot occur in the absence of mutation. Speciation cannot occur in the absence of natural selection
If the object doesn’t contain carbon. All living things contain carbon in some way. Except monoxide, dioxide, carbides, and carbonates
