Answer:
reduce drastically
Step-by-step explanation:
The amount of glucose and oxygen produced during photosynthesis would reduce drastically if the amount of sunlight decreased. Photosynthesis reaction is dependent on light.
Photosynthesis is the process whereby green plants manufacture their food using carbon dioxide and water in the presence of sunlight to produce glucose and oxygen gas.
Sunlight is vital for the photosynthesis and the rate of this procedure depends on the amount of sunlight it receives.