What method would be the best choice for a climatologist to find out what the ocean temperatures were like during the Pleistocene ice ages 30 million years ago? Analyze ice core samples from pleistocene glaciers.

Analyze the tree rings of petrified wood from the Pleistocene.

Analyze alkenones molecules of phytoplankton in rocks of that period.

Analyze O-18 ratios from Antarctic glaciers.

Chlorophyll is a green pigment that is found in which are closely related. a) fungi and plants b) green algae and plantlike protists c) plants and plantlike protists d) plants and green algae

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 of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs