A greenhouse warms up because its glass lets light in but:
ABlocks the light
BLets heat out
CReflects rain
DTraps the heat
Answer & Solution
Correct answer: D. Traps the heat
1. Light passes through the glass panels.
2. The heat produced inside cannot escape.
3. So the greenhouse warms, like a car parked in the sun.
_Source: NCERT Class 12 Biology, Chapter 16, Environmental Issues._
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