The diagram below is an illustration of a part of a system in human.
Study the diagram carefully and answer the questions that follow.
(i)
Name the system illustrated
(ii)
Name each of the parts labelled, I,II,III, and IV.
(iii)
What is the role of the part labelled I.
(iv)
Name three diseases that affects the system illustrated.
The set-up below shows air being breathed out through the mouth into test-tube containing lime water.
(i)
Why does the lime water turn milky?
(ii)
Identify the milky substance produced.
(iii)
Write a balanced chemical equation for the reaction.
(iv)
Name two other substances present in breathed-out air.
(v)
What is the aim of the experiment?
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