Question 2
Question 2 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
19. Organisms and their e...
19.1. Energy flow

State that the Sun is the principal source of energy input to biological systems

19. Organisms and their e...
19.2. Food chains and food webs

Explain why it is more energy efficient for humans to eat crop plants than to eat livestock that have been fed on crop plants