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2015-10-02T17:22:55+05:30

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The major excretory substances are:
1. carbon dioxide
2. 
 urea
3. uric acid
4. excess water 
5. toxic substances
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2015-10-02T17:23:30+05:30

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The four substances that have to be excreted from the body are,
Salt,
Water, 
Carbon-dioxide; and,
Urea.
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