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What can be affected by decline in wildlife numbers?

Answer and explanation

Correct answer: Ecological balance may be disturbed

Wildlife is an important part of an ecosystem. Different animals take part in food chains, control populations, spread seeds, or support other ecological processes. If the number of wildlife species falls sharply, relationships between organisms can be disturbed. For example, the loss of a predator may allow some prey animals to increase excessively, while the loss of another species may reduce food available to higher consumers. Such changes can weaken ecological balance.

Option B is correct because a decline in wildlife may disturb the balance of an ecosystem. The word “may” is important: the exact effect depends on which species decline and how much. The other options are not reliable conclusions. Pollution will not always decrease, habitats will not all increase, and food chains can certainly be affected when species disappear or become very rare.

Related tags

Wildlife DeclineEcological BalanceFood Chain

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