(a) List two ways by which carbon dioxide is ‘fixed’ in the environment.

Answer: The balanced reaction of combustion of carbon can be written as:       C +  O2 ----------------> CO2      1       1                          1  (i) As per the balanced equation, 1 mole of carbon burns in 1 mole...

 During decomposition process of biodegradable substances foul smell and some harmful gases are released which make problem for the nearby living person.  During decomposition it provide a breeding...

(c) ozone and oxygen

                            Carbon + Oxygen → Carbon dioxide  3g of carbon reacts with 8 g of oxygen to produce...

The law of conservation of mass states that mass can neither be created nor destroyed or mass of reactants is always equal to that of products.     C        + ...

(ii) Stomata

Two ways in which biodegradable substances would affect the environment are: (i) Decomposition of biodegradable wastes produces foul smell which spreads in the environment and makes the life of people miserable. (ii)...

Two ways in which non-biodegradable substances would affect the environment are: (i) Some of the non-biodegradable wastes (pesticides and heavy metals) convert the land into barren land and enter the food...

(C) carbon dioxide only

The two characteristic properties of the carbon element which leads to the formation of a very large number of organic compounds are:  Catenation Tetravalency Catenation: Carbon has the unique ability to form bonds...