1x4=
17
Read and answer the questions.
Heat is trapped by glass and hence the temperature inside a glass
enclosure will be much higher than the surroundings. This phenomenon was used to
create an enclosure where tropical plants could be kept warm during the winters in
colder climates. Such enclosures are called green houses. Some gases also prevent the
escape of heat from the Earth. An increase in this gas in the atmosphere would cause
more heat to be retained by the atmosphere and lead to global warming.
Q.1. Which gas is required by plants to prepare their own food?
Q.2.Name one gas that you know can cause global warming
Q.3. Heat can also be trapped in
A) a cloth covering
B) a transparent polythene
C) under any substance
D) none of these
Q.4.What is global warming?
Answers
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Answer:
its to long
not be easy to answer
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