railway RRB JE (CBT I + CBT II) Mock Test 2024 People Development & Environment Basics of Environment Ecology and Ecosystem
A few toxic pollutants in water undergoes biomagnifications, which means:
1
Increase in concentration of the pollutants as they cannot be recycled
2
Increase in concentration of the pollutants as they are not biodegradable
3
Increase in concentration of the pollutants at successive trophic levels
4
Increase in concentration of the pollutants over time