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Algae often float on the surface of wate...

Algae often float on the surface of water during day but sink down during night due to

A

they become light due to consumption of food material in respiration.

B

they become light due to consumption of food material in respiration

C

of accumulation of organic acids at night.

D

of change in temperature

Text Solution

Verified by Experts

The correct Answer is:
B
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