MCQ
Which biological factor is responsible for poor vegetation in deserts:
- AGrazing by animals and goats
- BLow rainfall
- CPoor fertility of soil
- DNative mankind
Explanation:
Deserts have 25cm (10 inches) or less of precipitation and show poor biodiversity and their productivity is minimum.
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Column $-I$ |
Column $-II$ |
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$(a)$ Muscular movement |
$(1)$ Trachea, oviduct |
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$(b)$ Ciliary movement |
$(2)$ Macrophages, leucocytes |
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$(c)$ Amoeboid movement |
$(3)$ Human's jaws, tongue |