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What is the primary cause of diversity among living organisms?

Answer and explanation

Correct answer: Environmental changes and adaptation

Correct answer: A, environmental changes and adaptation. Living organisms occupy different habitats, and these habitats differ in temperature, water availability, light, food, predators and many other conditions. Such differences create different survival pressures. In populations, inherited variations that help organisms survive and reproduce may become more common over generations; this process produces adaptations and contributes to biodiversity. B is wrong because eating the same food does not explain the broad variety of organisms. C can create selected differences in domesticated organisms, but it is a limited human-directed cause, not the primary natural explanation for biodiversity. D is wrong because constant conditions provide less pressure for varied adaptation. A useful sequence is: environmental variation, inherited variation, natural selection, adaptation and diversification.

Related tags

BiodiversityAdaptationEnvironmental VariationEvolutionAnd Classification SystemsBiodiversity And Classification SystemsThe Living WorldBiology

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