Which functional group is responsible for the sour taste of citrus fruits? carboxyl group carbonyl group amino group

The movement of tectonic plates in two different locations is shown below: two blocks labeled location a and location b are shown. at location a the top layer of the block shows two horizontal arrows pointing towards each other. small dunes are shown in the middle between the two arrows. the block labeled b has a vertical line in the middle. on the left of the line there is an arrow pointing down. on the right of the vertical line there is an arrow pointing up which statement is most likely true? subduction may occur in both locations. earthquakes may occur in both locations. subduction may occur in location a only and a volcanic eruption may occur in location b only. an earthquake may occur in location a only and a volcanic eruption may occur in location b only.

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

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?