. Explain the role of ATP in photosynthesis? How does ADP compare to ATP?

When the cell has extra energy (gained from breaking down food that has been consumed or, in the case of plants, made via photosynthesis), it stores that energy by reattaching a free phosphate molecule to ADP, turning it back into ATP. The ATP molecule is just like a rechargeable battery. ... When it's run down, it's ADP.

in a word, a scientific question is testable. a testable question is one that asks about objects, organisms or events found in the world around it

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above