Answer:
(a)
In cloudy days, photosynthesis is reduced due to low light intensity.
(b) In case of no rainfall in the area, rate of photosynthesis decreases.
(c) With good manuring in the area, rate of photosynthesis
increases due to increase in soil fertility.
(d) When stomata gets blocked due to dust, photosynthesis
decreases by reducing gaseous exchange. (5)
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