Question

04 state the importance by oxygen dissolved in
water,
Ans​

Answer 1

Answer:

this dissolved Oxygen is use by fishes and plant

Explanation:

for respiration

Answer 2

Answer:

dissolved oxygen (Do) is one of most imp indicators of water quality.

Explanation:

It is very essential for the survival of fish and aquatic animals like plankton and zooplankton etc. 02 dissolves in surface of water due to areating action of winds. It is byproducts of aquatic plant photosynthesis....