Explain the relationship between CFCs and ozone in the stratosphere.<br> </h2></div>

What do global problems mean? Which are the global problems that organisms are facing today?<br> </h2></d…

A lake with an inflow of domestic sewage rich in organic waste may result in</h2></div>

BOD of two samples of water A and B were 120 mg/l and 400 mg/l respectively. Which sample is more polluted.</h2>&l…

What are joint forest management committees? What values do they depict?</h2></div>

List the events that reduce the biological oxygen demand (BOD) of a primary effluent during sewage treatment.<br> …

Multiple Choice Questions<br> BOD is a measure of<br> </h2></div>

Which kind of pollution is caused mainly due to agrochemical waste?