HW 26 Natural Selection and Evolution

Natural Selection and genetic drift both can result in evolution of a species.

• True

• False

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Who introduced the idea of evolution through natural selection?

• Isaac Newton and Albert Einstein

• Marie Curie and Nikola Tesla

• Charles Darwin and Alfred Russel Wallace

• Gregor Mendel and Louis Pasteur

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What is the term for differences among individuals of the same species?

• Selection

• Adaptation

• Mutation

• Variation

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What feature helps giraffes reach tall trees in the savanna?

• Long legs

• Long necks

• Sharp teeth

• Thick fur

What is an adaptation?

• A change in the environment

• A feature that helps an organism survive

• A type of food

• A kind of animal

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What happens to giraffes with longer necks?

• They can reach more food and are more likely to reproduce

• They are more likely to be eaten by predators

• They are less likely to survive

• They become slower

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What is the result of natural selection over a long time?

• Immediate extinction

• No change in species

• Evolution into new species

• Decrease in population

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What is the common ancestor of giraffes and okapis?

• An ancient animal with a shorter neck

• A modern okapi

• A modern giraffe

• A dinosaur

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What is one reason why living things change over time?

• Only because of food availability

• Due to various factors like avoiding predators and finding mates

• Only because of climate change

• Only because of human intervention

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What did researchers find about lizards after a hurricane?

• They moved to a new island

• They had longer tails

• Survivors had larger toe pads and shorter hind limbs

• They all died

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