The arctic poppy grows in many places, even among rocks. the flower is made up of four petals formed into a cup-shape. the stems are hairy and 10 to 15 cm high with a single flower on each stem. the flowers of these plants are heliotropic; they turn to face the sun. dark colored insects land inside the poppy's cup to collect nectar and also pollinate the flower. how is this an advantageous, mutualistic relationship?

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 is earths lithospheric plates interact at

According to the cladogram, which organisms have roundworms as a common ancestor?