Air ----
Practice Sheet
Answer the
following:-
Q1. What are
the ways to keep the air clean?
Q2. Which
gas is produced during respiration?
Q3 . Which
gas is needed by plants to make food?
Q4. What
are the composition of air?
Q5. Why is smoking not allowed in public places like
restaurants, cinema halls, offices
etc.?
Q6 .All living organism requires air to live-
Q7. Celebrating Diwali by bursting crackers is harmful-
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