Unit 3- Diversity and Evolution

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What is empirical evidence?

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Empirical evidence is information acquired by observation or experimentation that is used to support or disprove a scientific theory.

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What is natural selection?

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Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

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How does the scientific community validate scientific knowledge?

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The scientific community validates knowledge through debate, peer review, and confirmation of findings.

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What role do fossils play in understanding evolution?

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Fossils provide evidence of the chronological sequence of species development, showing how species have changed over time.

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What does it mean when we say species evolve?

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When we say species evolve, it means that they undergo changes over generations, leading to the development of new traits or species.

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What is the significance of genetic variation in evolution?

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Genetic variation is crucial for evolution as it provides the raw material for natural selection to act upon.

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What is a scientific theory?

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A scientific theory is a well-substantiated explanation of an aspect of the natural world that is based on a body of evidence.

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How can environmental changes affect species?

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Environmental changes can lead to adaptations in species, influencing their survival and reproduction.

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What is the difference between a hypothesis and a theory?

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A hypothesis is a testable prediction, while a theory is a comprehensive explanation supported by a large body of evidence.

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What is the importance of biodiversity?

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Biodiversity is important because it enhances ecosystem productivity and stability, providing resilience against environmental changes.