Which gas is mainly responsible for global warming?

The main cause of acid rain is the presence of:

Which layer of the atmosphere contains the ozone layer?

The process of converting waste materials into reusable objects is called:

Which pollutant is mainly responsible for depletion of ozone layer?

The pH of acid rain is generally:

Which of the following is a greenhouse gas?

Water pollution caused by excessive plant nutrients is called:

The major source of indoor air pollution in rural areas is:

The best method to reduce plastic pollution is: