" Give two ways in which carbon dioxide is fixed."

With the help of a labelled diagram show (a) Nitrogen cycle in nature (b) Describe briefly any two processes involved in the cycling of N_(2) in the environment. OR With the help of a labelled diagram show the cycling of carbon in nature. What are the two ways in which carbon dioxide is fixed in the environment.

Carbon dioxide is fixed in

Carbon dioxide is fixed in

Carbon dioxide is fixed in

(i) With the help of a neat labelled diagram depcit the cycling of carbon in nature. (ii) Mention two ways in which carbon dioxide is fixed in the environment. OR (i) Describe green house effect. How the presence of green house gases would lead to global warming. (ii) Draw a neat labelled diagram of water cycle in nature.

List two ways by which carbon dioxide is fixed in the environment. (b) Name two diseases caused due to an increased content of pollutants in the air produced due to the burning of fossil fuels.