If you were a conservation biologist in charge of the recovery plans for an endangered species, which would you prefer to find within that species: an even distribution of age classes or a pyramid-shaped age distribution? Why?

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

What best explains the inability for life to exist in earth early atmosphere