Which characteristics belong to Whittaker's classification system? Three domains

Six domains

Two kingdoms

Five kingdoms

Five levels

Seven levels

Eight levels

(Multiple choice)

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

In what for do plants utilize nitrogen? why do they need nitrogen?

What is the one part of the nucleotide  that differs among the other different nucle  tides?