NEET

Which of the following is the major cause of global warming?

re-radiation of U.V. rays by CO₂ and H₂O
re-radiation of I.R. rays by CO₂ and H₂O
re-radiation of I.R. rays by O₂ and N₂
re-radiation of U.V. rays by O₂ and N₂

A lake with an inflow of domestic sewage rich in organic waste may result in

drying of the lake very soon due to algal bloom
an increase production of fish due to lot of nutrients
death of fish due to lack of oxygen
increased population of aquatic food web organisms

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