Yes, environmental pollution is the biggest threat to human beings on this planet particularly the problem of climate change. The latter will not only lead to loss of life and property, but will also cause a major reshuffle in flora, fauna and human population, and cropping pattern of the world.

Yes. it is. Various types of pollution creating gradually harm to earth,. Now a days so many measures are taking to control or reduce pollution. Its a global treat.

The environment consists of earth, water, air, plants and animals. If we pollute them, then the existence of man and nature will be hampered.

What is my opinion?

Absolutely, always "the best solution is prevention"