2566: Which of the following has/have shrunk immensely/dried up in the recent past due to human activities ?
1. Aral Sea
2. Black Sea
3. Lake Baikal
Select the correct answer using the code given below :
(a) 1 only
(b) 2 and 3
(c) 2 only
(d) I and 3
2567: Among the reasons for disguised unemployment in rural areas is
(a) Choice of a heavy industry model for economic development
(b) Low levels of technological development in the country
(c) Heavy pressure of population along with half-hearted implementation of agrarian reforms
(d) High illiteracy rates
2568: Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called
(a) Keystone species
(b) Allopatric species
(c) Sympatric species
(d) Threatened species
2569: Which of the following are fed to cattle?
1. Sugarcane tops
2. Sugarcane leaves
3. Sugarcane bagasse
4. Sugarcane jaggery
(a) 1, 2, 3 & 4
(b) 1 & 3
(c) 2 & 3
(d) 1, 2 & 3
2570: Consider the following events :
I. Reign of Krishnadevaraya of Vijayanagara.
II. Construction of Qutab Minar.
III. Arrival of Portuguese in India.
IV. Death of Firoz Tughlaq.
(a) II, IV, III, I
(b) II, IV, I, III
(c) IV, II, I, III
(d) IV, II, III, I