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  • [an-ti-bahy-OT-ik]
    noun

    An antibiotic is a type of medicine used to kill or slow the growth of harmful bacteria—that is, bacteria that make us sick—and cure infections. Antibiotics work only for infections caused by bacteria; they do not fight infections caused by viruses, such as colds or the flu.

  • [KAHR-kuhs]
    noun

    A carcass is the dead body of an animal, especially one that has been prepared for use as meat.

    After a thanksgiving meal, some people use a turkey carcass to make soup.

  • [PAIR-uh-lahyzd]
    adjective

    The verb paralyze means “to make unable to move or function.” Someone who is paralyzed is unable to move. An illness or injury might cause the whole body or a part of a body to become paralyzed. People can also be paralyzed by an emotion. If Nate is paralyzed with fear, he is—at least for that moment—so scared that he can’t move.

     

    This wasp used venom to paralyze this spider. Why? Because paralyzed spiders are much easier to eat than spiders that can move.

  • [roh-BUHST]
    adjective

    A person who is robust is strong and healthy. A thing that is robust is strongly-built and unlikely to fail or weaken.

  • [VEN-uhm]
    noun

    Venom is a poisonous fluid produced by certain animals such as snakes, spiders, and jellyfish. Animals inject venom into their prey and their enemies, usually by biting or stinging.

    Strong feelings of anger and hatred are sometimes called venom too, as in “Jill’s comments were full of venom.”

  • Now Let’s Practice! 

    In the activities on the following pages, you’ll practice using the words you just learned.

  • photo quiz

    Which could your immune system help you do?

    digest a pizza
    recover from a cold
    learn to tap dance
  • photo quiz

    Which could your immune system help you do?

    answer
    digest a pizza
    recover from a cold
    learn to tap dance
  • photo quiz

    Why might this object be helpful to someone whose lower body is paralyzed?

  • photo quiz

     

    Who is more robust, Linda or Ben?


    Who do you think has a stronger immune system? Explain.

  • photo quiz
    Poor Olive has an eye infection. Bacteria caused it. Luckily, her owner got some drops that will kill those bacteria. In a few days, Olive should be as good as new.

    What kind of drops are being put in Olive’s eye?

    antibiotic drops
    venom drops
    carcass drops
  • photo quiz

    What kind of drops are being put in Olive’s eye?

    answer
    antibiotic drops
    venom drops
    carcass drops
  • photo quiz

    Which of these delightful creatures is venomous?

  • photo quiz

    Which of these delightful creatures is venomous?

    answer
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