B) Tertiary consumers
C) Secondary consumers
D) Primary consumers
Correct Answer: A
Solution :[a] The pyramid of numbers depicts the relationship in terms of the number of producers, herbivores and the carnivores at their successive trophic levels. There is a decrease in the number of individuals from the lower to the higher trophic levels. Considering the grassland ecosystem, the lowest (first) trophic of producers will be the largest population.
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