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

Describe the effects of untreated sewage and excess fertiliser on aquatic ecosystems

16. Reproduction
16.3. Sexual reproduction in plants

Investigate and describe the environmental conditions that affect germination of seeds, limited to the requirement for: water, oxygen and a suitable temperature