state gov APPSC Forest/Assistant Beat Officer (ఫారెస్ట్/అసిస్టెంట్ బీట్ ఆఫీసర్) (Pre + Mains) Mock Test 2025 General Science Biology Human body
Which of the following is necessary to maintain the number of individuals of species and to prevent their extinction?
1
Reproduction
2
Circulation
3
Digestion
4
Respiration