4.2
State the effect of temperature on oxygen production in
the light when the temperature is increased:
(a) from 25°C to 35°C
(b) from 40°C to 50°C.
(1)
(1)
4.3
A farmer wants to grow orange trees in a greenhouse.
He wants to sell the oranges he produces at a local
market. He decides to heat the greenhouse to 40°C.
Explain why he should not heat the greenhouse to a
temperature higher than 40°C.
4.4 Name TWO other factors that are required for
photosynthesis
(2)
(2)
(8)
[50

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