Question

What do you mean by BOD and COD?​

Answer 1

Answer:

BOD means Biochemical Oxygen Demand and COD means Chemical Oxygen Demand.

Answer 2

Answer:

may it helppppp youuuuuuu

if BOD is greater then , pollution in water is greater.

COD contains both biodegradable and non biodegradable substances.

BOD contains only biodegradable substances.