The given diagram shows the contribution of greenhouse gases. Which gas contributes a minimum to the greenhouse effect?

When there is depletion of ozone in the stratosphere the wavelength of radiation striking the earth's surface will be ..…

Through food chain radioactive Sr is deposited in which part of human body? </h2></div>

Continuous sewage flow into a stream would lead to</h2></div>

Environment is warmed up by</h2></div>

Supersonic jets cause pollution by thinning of</h2></div>

Which one of the following human activities would cause least damage to the ecosystem?</h2></div>

UV radiations bring about</h2></div>