(1 pt) what was the name of the original supercontinent that wegener proposed in his theory? a. atlantis b. gondwanaland c. laurasia d. pangaea

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources? (site 1)

Which kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?