Ice floats on a lake. This characteristic of water is responsible for -

A: suffocation of aquatic organisms
B: mixing a lake's thermal layers
C: altering migration patterns of fish
D: preventing a lake from freezing solid

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?

Modern whales developed their traits through natural selection what occurs during the process of natural selection

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities