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    #1

    that is? binds to?

    "A freshwater algae that is a rich source of nutrients, chlorella binds to heavy metals and chemicals that have accumulated in the body."

    Why would this sentence use "that is"? Is it addressing the same meaning as "A freshwater algae is a rich source of nutrients. Chlorella binds to heavy metals and chemicals that have accumulated in the body."?
    Besides, what does "binds to" mean here?

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    #2

    Re: that is? binds to?

    If it binds to it, it combines or sticks to it, presumably making it possible to get rid of it.

  1. #3

    Red face Re: that is? binds to?

    Hi Eway,
    The first clause uses 'that is' to identify the subject in the second clause - to let you know that we're talking about chlorella and not something else. To say ' a freshwater algae is a rich source of nutrients' is incorrect - you would have to omit (leave out) the 'a', since that is referrring to something specific. It is correct to say that 'freshwater algae are a rich source of nutrients' since this is not referring one type, but to algae in general.
    Hope this helps,
    Dippit

    P.S. Alga is singular, algae is plural.

  2. Casiopea's Avatar

    • Join Date: Sep 2003
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    #4

    Re: that is? binds to?

    What about?

    "Chlorella, a freshwater alga (that is) rich in nutrients, binds to heavy metals and . . . ."

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    #5

    Re: that is? binds to?

    Thanks! It's getting more and more clear...
    There is another sentence to this paragraph I don't understand.
    "Chlorella, which is considered to be an exceptionally broad spectrum anti-mutagen supplement..."

    What does "broad spectrum" mean here?
    Is "broad spectrum" here referring to anti-mutagen or supplement? (Chlorella is a broad spectrum supplement / the anti-mutagen chlorella contains is broad spectrum?)

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