What happens when water is deoxygenated due to algal growth?

Water pollution can be caused due to:</h2></div>

Government of India has adopted auto fuel policy to effectively cut down </h2></div>

Which of the following is a secondary treatment for water pollution?

How is 'bad' ozone different from 'good' ozone?</h2></div>

________ is e-waste.<br> </h2></div>

What is global warming? Mention any four measures to control global warming.</h2></div>

I. Minimize the use of plastic bags.<br> II. Plastic is non biodegradable.</h2></div>