The sun and moon are very different sizes, but often appear to be the same size. during a solar eclipse, our tiny moon can totally block the giant sun because of
a: the dark side of the moon facing earth.
b: the large shadow earth casts on the sun.
c: their differing distances from the earth.
d: the reflection of light waves from the sun.

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 does the carbon cycle involve an exchange of carbon

How do plants obtain more sunlight a.) they lean towards the light b.)they grow straight up c.) they only live in sunny areas, like the tropics d.) they stay low to the ground