The temperature known as Biological Zero

A. 0°C

B. -273°C

C. 5°C

D. 10°C

Answer: Option C

Solution(By Examveda Team)

A temperature of 5°C is known as Biological Zero.
This term was first published in the soil science literature in the first edition of soil Taxonomy, and it was described as the temperature below which biological or microbial activity is sufficiently low that reducing conditions do not readily develop in saturated soils.