Grass absorbs about of the sun's energy, while is lost as heat.

The correct answer is 10% and 90% respectively.

Explanation:

The transfer of the energy in the ecosystem is only 10% of the energy and the rest 90% energy lost as the heat through each trophic level of the ecosystem. The producers get their energy from the sun in the form of solar energy. Producers like Grass and other plants absorb 10% of the solar energy they get and rest lost as heat.

This loss of energy as heat also occurs at every trophic level. From the producers to different levels of consumers to decomposers. The energy can not be destroyed or created it just changes its form.

Thus, the correct answer would be 10% and 90% respectively.

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