What must be true if the mesentery is an organ? Choose the three statements that apply. A. It is part of an organ system.

B. It has a specific function in the body.

C. It is composed of different kinds of tissues.

D. It is found in every type of multicellular organism.

E. It is a group of similar cells that carry out the same function.

Gabriel is at a stage where his body is changing physically; he is growing facial hair and building muscle. he is also just starting to make sperm. what is most likely gabriel’s age? 5 12 17 21

Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?