Species are the smallest groups. A species consists of all the animals of the same type, who are able to breed and produce young of the same kind. For example, while any two great white sharks are in the same species, as are any two makos, great whites and makos are in different species (since they can't interbreed Answer :SPECIES
If they're different sizes and densities, you are able to separate the substances.
<span>B. electron = negative; proton = positive; neutron = no charge </span>
