Evolution and Natural Selection

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What is natural selection?

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The process by which organisms better adapted to their environment tend to survive and produce more offspring.

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What is natural selection?

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The process by which organisms better adapted to their environment tend to survive and produce more offspring.

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What is evolution?

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The process of change in all forms of life over generations

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What is adaptation?

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The process by which organisms adjust to changes in their environment in order to survive and reproduce.

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Who is Charles Darwin?

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An English naturalist, geologist and biologist known for his contributions to the science of evolution.

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What did Charles Darwin contribute to the field of biology?

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Theory of evolution through natural selection

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Speciation

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The process by which new species are formed from existing ones.

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Coevolution

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The process in which two or more species reciprocally affect each other's evolution through natural selection.

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What is the main factor influencing natural selection?

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Environment

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Example of an adaptation in a desert environment:

• Plants storing water in their leaves or stems
• Cacti having thorns to protect against predators
• Animals migrating to cooler areas during the day
• Plants growing tall to reach sunlight

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Plants storing water in their leaves or stems

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