Which of the following is an incorrect pair?

Choose the correct option regarding the following statements:
$(1)$ $CO_2$ contribution in global warming is $60\%$.
$(2)$ Greenhouse effect occurs due to deforestation.
$(3)$ Due to the greenhouse effect,the present average temperature at the surface of the Earth is $15^oC$.
$(4)$ The amount of $DDT$ in small fish is $0.05\ ppm$.

In order to protect and improve the quality of our environment,the government of India passed the Environment (Protection) Act in which year?

Which of the following is an inexhaustible resource?

Which act was enacted by the Government of India to protect and improve the quality of our environment and to control environmental pollution?

Biological magnification refers to