Which radiations reaching the Earth's surface are absorbed by the gases present in the Earth's atmosphere?

In an ecological crisis,whose interference plays an important role?

List all the wastes that you generate at home,school,or during your trips to other places. Which could you very easily reduce? Which would be difficult or rather impossible to reduce?

Which of the following statements is/are correct?
$I.$ Chemical fertilizers cause pollution of water bodies as well as groundwater,besides getting stored in crop plants. Therefore,environmental scientists are pressing for a switch over to organic farming.
$II.$ Organic farming is a form of agriculture that relies on techniques such as crop rotation,green manure,compost,and biological pest control.

Match the Column-$I$ with Column-$II$:

Column-$I$	Column-$II$
$(a)$. Pyrolysis	$(i)$. Methaemoglobinemia
$(b)$. Carbon monoxide	$(ii)$. Chronic exposure to arsenic
$(c)$. Blue baby syndrome	$(iii)$. Asphyxia and giddiness
$(d)$. Black foot disease	$(iv)$. Disposal of hospital waste

Provide information about Ecosan toilets.