According to the model developed by copernicus, what causes day and night on earth?

a
earth rotates on its axis.

b
planets orbit the sun in elliptical paths.

c
all parts of the solar system move in circular paths.

d
earth revolves around the sun.

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b. through genes c. through seasonal cycles d. through hibernation