How do whales differ from fish A) whales use blowholes for breathing
B) whales have scales that cover the skin
C) whales develop lungs following metamorphosis
D) whales reproduce through external fertilization

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

Which level of taxonomy has the fewest organisms?

What do all of the above organisms have in common