When a particular species ceases to exist, that species has gone extinct. An extinct species has no living family members.
Moose are of their own species, they are not in any particular species, even though there are several subspecies of moose in the world.
Any species of gecko can serve as a great pet, so long as your area does not have any restrictions or laws permiting to that particular species.
The term 'exotic species' can apply to any species that is not native to a particular country. Imported 'exotics' can endanger local wildlife by preying on them for food !
Well there were several species that were affected like the herring gull and a few species of fish that came up to the surface but there was no inparticular species of fish or bird affected
Not to anyone's particular knowledge. His existence was so long ago and his role in history was so insignificant no one quoted him.
Of course, penguins do not have mental problems; you cannot say that a species of animals has mental problems. As in any species, one particular bird or penguin might suffer from the problem, but, not the whole of the species.
a species that has been introduced from another geographic region to an area outside its natural range
No, sparrows typically lay eggs that are white or pale blue with brown speckles. Blue eggs are commonly laid by birds like bluebirds and robins.
A gene pool is the set of all genes, or genetic information, in any population, usually of a particular species.
False. Evolution is a general theory relating to the change amongst species over time. It is not specific to any particular species, nor even to a group of species, but to all species that have ever existed, are existing and will ever exist.
Yes. Rabies is not particular about species; any mammal can get it, and it's even possible to infect birds with it (in the lab; I don't think there are any known wild cases).
mutation is an alteration in the nucleotide sequence of a gene whereas variation is any difference between individuals of a particular species.