Q2. Consider the following diseases:
2. Hepatitis B
3. Dysentery Which of the above disease(s) is/are caused by protozoans?
A. 3 only
B. 1 and 2 only
C. 1 and 3 only
D. 1, 2 and 3
Exp: Malaria is a mosquito-borne infectious disease affecting humans and other animals caused by parasitic protozoans (a group of single celled microorganisms) belonging to the Plasmodium type. Malaria is a life-threatening disease caused by parasites and transmitted to people through the bites of infected female Anopheles mosquitoes
Q.3 The terms Cirque, Aretes and Bergschrund are related to which geographical phenomena?
A. Coastal landforms
B. Wind erosion landforms
C. Landforms of glaciation
D. Running water landforms
Exp: A cirque is an amphitheatre-like valley formed by glacial erosion. An Aretes is a narrow ridge of rock which separates two valleys. It is typically formed when two glaciers erode parallel U-shaped valleys. Bergschrund are crevasse at the junction of a glacier or snowfield with a steep upper slope. These are landforms of glaciation.