Correct Answer : Montreal protocol
The Montreal Protocol on Substances that Deplete the Ozone Layer (the Montreal Protocol) is an international agreement made in 1987. It was designed to stop the production and import of ozone depleting substances and reduce their concentration in the atmosphere to help protect the earth's ozone layer.
Correct Answer : Cattle dung
Any substance that does not cause pollution and is capable of getting decomposed by any living organism is called as Bio degradable. Human & animal excreta, plant wastes etc... come under bio-degradable.
Correct Answer : Recycling
Recycling is the best way to get rid of nonbiodegradable waste. Burying will not have any effect on the non-biodegradable wastes.
Correct Answer : Neem
Neem tree is mainly cultivated in the Indian subcontinent. Neem is a member of the mahogany family, Meliaceae. Today it is known by the botanical name Azadirachta indica.
Correct Answer : Chloro Fluoro Carbon
The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (Chloro Fluoro Carbons (CFCs), HCFCs, halons), referred to as ozone-depleting substances (ODS).
Correct Answer : Third
Earth is the third planet from the Sun at a distance of about 93 million miles (150 million km).
Correct Answer : Diorite
Correct Answer : Both (a) and (b)
Correct Answer : 40,070 Km
The Earth's circumference and radius, 40,070 km and 6378 km respectively, which have since been measured by orbiting spacecraft. The diameter of a circle is twice the radius, giving us a diameter for Earth of 12,756 km.
Correct Answer : outer core
The crust and the inner core are solid, whereas the outer core and inner mantle are liquid. The outer mantle is semi solid.
