state gov APPSC Forest/Assistant Beat Officer (ఫారెస్ట్/అసిస్టెంట్ బీట్ ఆఫీసర్) (Pre + Mains) Mock Test 2025 General Science Biology Ecology & Environment
Which of the following substances show biological magnification?
1
Chemical pesticides
2
Acidic fumes
3
Carbon soot deposits
4
Greenhouse gases