Suppose that a pair of a gentically modified species of rabbits left on an island produces two new pairs of rabbits at the age of one month and six new pairs of rabbits at the age of 2 months and every month after ward. None of the rabbits ever die or leave the island. (a) Construct a recurrence relation for the number of pairs of rabbits on the island n months after one newborn pair is left on the island. (b) Solve the reucurrence in part a) amd determine the number of pairs of rabbits on the island n months after one pair is left on the island.

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

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except