NATURAL RESOURCES

The atmosphere of the Earth is heated by radiations which are mainly (a) radiated by the Sun (b) re-radiated by land (c) re-radiated by water (d) re-radiated by land and water

The two forms of oxygen found in the atmosphere are (a) water and ozone (b) water and oxygen (c) ozone and oxygen (d) water and carbon dioxide

One of the following processes is not a step involved in the water-cycle operating in nature (a) evaporation (b) transpiration (c) precipitation (d) photosynthesis

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