Hich of these is common to all chemical changes? a) a change of state occurs. b) a change of color occurs. c) a new substance is produced. d) heat is released into the air.

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?

Which conditions need to be in balance for cells to function? check all that apply. blood sugar food intake body water body temperature body mass

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