Which one of the following is not a functional unit of an ecosystem?

  • A
    Energy flow
  • B
    Decomposition
  • C
    Productivity
  • D
    Stratification

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The energy obtained from fossil fuels is essentially a product of which of the following?

Identify $Z$ in the given figure representing the carbon cycle.

Select the incorrect statement from the following.

Which of the following has the largest population in a food chain?

What will happen to an ecosystem if:
$(a)$ All producers are removed;
$(b)$ All organisms of herbivore level are eliminated; and
$(c)$ All top carnivore population is removed?

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