From the producer level to which level does energy flow directly?
A. decomposer
B. tertiary consumer
C. secondary consumer
D. primary consumer

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?

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Which blood cell spend most of their time in the lymphatic system?