Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Recap:
If we do not save water now, soon we will be
left with no safe water for consumption.
(d)
(e) W
1. Water is essential for life as all
living organisms need it.
2. Water plays an important role in
the working of our body.
3. The body loses water in the form
of sweat, urine and while
breathing.
4. Water is useful to us as it can
dissolve many substances in it.
Polluted water has many inpurities, like
different salts, dirt and germs present in it.
Water can be cleaned by the methods of
sedimentation and decantation, filtration,
boiling and chlorination.
7. Drinking water should be cleaned to kill
disease causing germs present in it.
8. Water is precious, it should be conserved.
5.
4. Nam
6.
(a)
(b)
(c)
(d
Exercises
5.
1.
Tick () the correct option:
is not soluble in water.
(a)
(1) Salt
(ii) Sugar
(iii) ( Sand
(iv) Ink
(b)
is soluble in water.
(i) Chalk
(ii) Ink
(iii) Sand
(iv) 6tone
(c) Sea vater is unfit for drinking due to presenceof large amounts of dissolved:
(1) nitrogen
(ii) exygen
(iii) carben diexide
(iv) salts
88
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