Sunlight energy is used in photosynthesis to: A. boost electrons to a higher energy state.
B. pump hydrogen ions into the stroma for chemiosmosis.
C. generate heat to help move NADPH.
D. make water for use in later steps.

Please help answer the question with the best choice listed above.

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.

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

What are some possible short and long term medical concerns for crew members on longer space exploration trips