Which of these is a distinguishing abiotic feature of the Great Barrier Reef, the world's largest coral reef?
A. Warm, shallow water
B. Blue skies
O C. Freshwater
O D. Colorful corals

In an energy pyramid, which level has the most available energy?

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?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: