Why is it important for us to learn about digestive system in the first place?
please help​

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

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?

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a