Question 39
Question 39 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
20. Human influences on e...
20.3. Pollution

Explain the process of eutrophication of water, limited to: - increased availability of nitrate and other ions - increased growth of producers - increased decomposition after death of producers - increased aerobic respiration by decomposers - reduction in dissolved oxygen - death of organisms requiring dissolved oxygen in water

6. Plant nutrition
6.1. Photosynthesis

Investigate and describe the effects of varying light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis

19. Organisms and their e...
19.4. Populations

Identify and state the factors affecting the rate of population growth for a population of an organism, limited to food supply, competition, predation and disease