4391: Biodiversity forms the basis for human existence in the following ways:
1. Soil formation
2. Prevention of soil erosion
3. Recycling of waste
4. Pollination of crops
Select the correct answer using the codes given below:
(a) 1, 2 and 3 only
(b) 2, 3 and 4 only
(c) 1 and 4 only
(d) 1, 2, 3 and 4
4392: Fog is common around Newfoundland coast because:
(a) Icebergs melt around the coast
(b) Warm and cold currents meet
(c) The rainfall is heavy
(d) High tides cause storms
4393: If the Speaker of the State Legislative Assembly decides to resign, he should submit his resignation to the:
(a) Chief Minister
(b) Deputy Speaker
(c) Judge of the High Court
(d) President
4394: What was the main reason for which Niger was in the news in recent times?
(A) Famine and starvation
(B) Many deaths due to AIDS
(C) Fierce civil war
(D) Intense fighting with Algeria
4395: In a dry cell (battery), which of the following are used as electrolytes?
(a) Ammonium chloride and Zinc chloride
(b) Sodium chloride and Calcium chloride
(c) Magnesium chloride and Zinc chloride
(d) Ammonium chloride and Calcium chloride