Discuss the acid rain occurs due to emission of smoke from vehicles and industries.

Study the following statements regarding acid rain and select the incorrect ones. (i) Acid rain refers to the rainfall and other forms of precipitation with a pH of less than 5. (ii) Oxides of sulphur and nitrogen are released from automobile exhausts, industries , power plants, etc. (iii) These oxides of sulphur and nitrogen, may react with water in the air and form sulphuric acid (H_(2)SO_(4)) and nitric acid (HNO_(3)) . (iv) Acid rain has harmful effects on animals and human beings but no characteristic impact on plants.

(i) What are the conditions which occur due to lack of ADH and insulin? How are the conditions different from one another? (ii) Write the events involved in the sexual reproduction of a flowering plant. Discuss the first event and write the types.

Process of ……………. Of milk proteins occurs due to lactic acid .

Carbon dioxide generated due to buring of fuels like coal, diesel leads to problems like acid rain.

Due to lack of rainfall, a pond ecosystem was totally vanished for a particular time period. Later after a heavy rain, it recovers by succession process. Brief out the type of succession that had occurred.

Identify the correct statements from the below about "Alcoholic fermentation". (I) It produces alcohol and releases CO_2 from pyruvic acid. (II) It commonly occur in single step (III) It commonly occurs in yeast (IV) It forms acetaldehyde as intermediate compound