Ecology — Test

Question 2 • Biology

Scientists have a theory about the relationship between climate and biodiversity. Which best describes this theory?

Answer

Colder climates promote higher biodiversity because they are usually larger in size. This provides space for more organisms.

Colder climates promote higher biodiversity, reducing the competition among organisms for food. This supports stronger organisms that live longer.

Warmer climates promote higher biodiversity, allowing plants to grow year-round. This supports more organisms that rely on plants.

Warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms.

Explanation

Warmer climates generally have longer growing seasons, so plants can grow for more of the year. More plant growth provides food and habitat for a greater variety of organisms, which can support higher biodiversity. Warm climates do not always receive more rainfall, so choice D gives an unreliable reason.

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