l.What is meant by "excretion ? What are the various waste materials excreted from the human body?Why is it necessary to excrete waste products? __________________________________
2.Explain how, water moves from the soil particles to the xylem vessel in the centre of a root.
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The process of removing waste products from body is called excretion
product which release are urine , faecus
2) water is transfer by roots
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