Why are trees considered to be producers? a. they do not need food to survive in an ecosystem b. they depend on consumers to them make their food c. they get their food from other sources d. they make their own food using energy from the sun

d they make their own food

Explanation:

they use photosynthesis and make their own food

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

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