Ahawk building its nest on an arm of a saguaro cactus is an example of
a. commensalism
b. mutualism
c. parasitism
d. predation

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

Turbo the snail moves across the ground at a pace of 12 feet per day. if the garden is 48 feet away, how many days will it take for the snail to get there?

How does the motion of particles in a gas change as the gas cools