Annual rainfall in grassland is about_____________?
Correct answer: C. 250-750 mm
- A. More than 2500 mm
- B. 750-1500 mm
- C. 250-750 mm
- D. Less than 250 mm
Explanation
Grasslands commonly receive about 250 to 750 mm of rainfall annually, enough to support grasses but usually insufficient for dense forests. Students may choose 750 to 1500 mm because they associate all productive vegetation with high rainfall, whereas that range more often supports wetter woodland or forest conditions.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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