alleryWhich radiation reaches the surface and drives photosynthesis?
ACosmic rays only
BVisible light
CGamma rays only
DRadio waves only
Answer & Solution
Correct answer: B. Visible light
1. Gamma rays and X-rays are filtered by the upper atmosphere.
2. Radio waves carry too little energy to matter here.
3. Visible light reaches the surface and powers photosynthesis.
4. So the answer is visible light.
_Source: syllabus Science, Ch 13 'Earth as a System: Energy, Matter, and Life'_
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