Answer :

On average, leaves and other surfaces reflect between 98 and 99 percent of the solar energy that enters the Earth. These reflections are then absorbed by other molecules, who then turn the energy into heat. Only 1 to 2 percent is therefore available for plants to absorb.

What is photosynthetic active radiation?

Plants use a region of the light spectrum called photosynthetic active radiation (PAR), or light with wavelengths between 400 and 700 nanometers, for photosynthesis.

Only around 10% of the energy is transferred to the following trophic level as a result. The ecosystem has a particular energy flow.

Therefore, only 2%  solar energy is captured by the cells of photosynthetic organisms.

Learn more about photosynthetic active radiation here:

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