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The primary source of energy in most ecosystems is/are
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The primary source of energy in most ecosystems is/are

User Medrod
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Answer:

The Sun.

Step-by-step explanation:

Energy reaches the Earth in the form of electromagnetic radiation.

Terrestrial solar radiation means solar radiation that reaches the Earth after passing through the Earth's atmosphere. About 97% of solar radiation reaches the Earth in the range of wavelengths 0.29 - 2.5 μm, and about 3% with wavelengths greater than 2.5 μm.

User Quasdunk
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