MS-LS2-4

Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations.

  1. Animals

    Weed killers may go from plant to pooch

    Dogs love to roll around in the grass. But if there is weed killer around, it could end up on — and in — our furry pals.

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  2. Agriculture

    Made in the shade

    Agroforestry combines woody plants and agriculture. Growing trees alongside crops and livestock benefits wildlife, environment, climate — and farmers.

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  3. Environment

    Insecticide can change a spider’s personality

    A chemical meant to kill moths affects the behavior of some spiders. It alters the spiders’ ability to capture prey — including those moths.

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  4. Agriculture

    Organic food starts to prove its worth

    Organic food often comes with a higher price. But research is showing that food grown this way can be better for the environment — and possibly for us.

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  5. Microbes

    How ‘brain-eating’ amoebas kill

    When people infected with a “brain-eating amoeba” die, their own immune systems might be to blame.

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  6. Health & Medicine

    Five things to know about ‘brain-eating’ amoebas

    These parasites can be scary, but they rarely trigger infections. Still, knowing more about them can help you avoid behaviors that heighten risks.

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  7. Plants

    Using plants to solve environmental problems

    Problems in their communities suggested good research projects to three teens. Each wanted to tackle a different issue, from pollution to world hunger. To learn more about these issues, they turned to their local ponds, wetlands and gardens.

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  8. Tech

    This door handle kills germs

    A high-tech door handle may cut down on disease transmission, say its teen developers. The system is powered by simply opening and closing the door.

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  9. Animals

    Scientists feed bed bugs (on purpose)

    To study bed bugs in the lab, scientists had to first learn how to keep the blood-thirsty critters well fed. And that proved easier said than done.

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  10. Environment

    Deep-sea fish show signs of exposure to pollution

    A new study suggests deep-water fish may have health problems linked to human pollution. Eating these fish may expose diners to the same pollution.

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  11. Animals

    Finding out why birds are out of range

    Sometimes people see large numbers of birds outside of their normal range. A student examined how to predict these excursions.

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  12. Animals

    Cats and foxes are eating up Australia’s mammals

    Since the arrival of Europeans in Australia, a startling number of mammal species have disappeared. A new study puts much of the blame on cats and foxes introduced by the early settlers.

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