HS-LS4-4

Construct an explanation based on evidence for how natural selection leads to adaptation of populations.

More Stories in HS-LS4-4

  1. Animals

    Cloning boosts endangered black-footed ferrets

    A cloned ferret named Elizabeth Ann brings genetic diversity to a species that nearly went extinct in the 1980s.

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  2. Microbes

    Explainer: Virus variants and strains

    When viruses become more infectious or better able to survive the body’s immune system, they become a type of variant known as a strain.

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  3. Genetics

    Just a tiny share of the DNA in us is unique to humans

    Some of these tweaks to DNA, however, may have played a role in brain evolution.

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  4. Archaeology

    Fossils unearthed in Israel reveal possible new human ancestor

    They come from a previously unknown Stone Age group that may represent a complex mashup of early members of our genus Homo.

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  5. Health & Medicine

    Will we all need COVID-19 booster shots?

    Experts say not yet, but booster vaccines may be coming as new SARS-CoV-2 virus variants keep emerging.

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  6. Fossils

    Scientists Say: Dinosaur

    Dinosaurs emerged between 243 and 233 million years ago. While some died out 66 million years ago, others are still with us — birds.

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  7. Health & Medicine

    Some young adults will volunteer to get COVID-19 for science

    Researchers will soon give some healthy people the new coronavirus. Their young volunteers have agreed to get sick to speed coronavirus research.

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  8. Chemistry

    Let’s learn about acids and bases

    Acids give away particles with positive charge. Bases accept positively charged particles. They are both critical for chemical reactions.

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  9. Archaeology

    Harsh Ice Age winters may have helped turn wolves into dogs

    In the Ice Age, Arctic hunters may have turned to some game for their fatty bones. Much of those animals’ meat might have been left to domesticate dogs.

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