Summarize the structure of Earth, including the layers, the mantle, and core, based on the relative position, composition, and density. PLEASE HELP

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?

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.