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Name the following.
Inert gases in the air
Concept: undefined >> undefined
Name the following.
Gases that are harmful to the ozone layer
Concept: undefined >> undefined
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Answer in your own words.
What are the various constituents of air? Write their uses.
Concept: undefined >> undefined
The human skeletal system is divided into ______ parts.
Concept: undefined >> undefined
Match the pairs.
| Group 'A' | Group 'B' |
| (1) Ball and socket joint | (a) Knee |
| (2) Hinge joint | (b) Wrist |
| (3) Gliding joint | (c) Shoulder |
Concept: undefined >> undefined
Right or wrong? If wrong, write the correct sentence.
The human skeleton protects the internal organs.
Concept: undefined >> undefined
The system which gives a definite shape to our body.
Concept: undefined >> undefined
Answer the following question in your words.
What are the functions of the human skeletal system?
Concept: undefined >> undefined
Write the causes of the following:
Floods
Concept: undefined >> undefined
Rubber made by vulcanization is a ______ material.
Concept: undefined >> undefined
Man-made materials are made by ______ natural materials.
Concept: undefined >> undefined
Rayon is also known as ______.
Concept: undefined >> undefined
The Pole Star is the best example of a ______ type of star.
Concept: undefined >> undefined
Why did the need for man-made materials arise?
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Which are the natural materials obtained from plants and animals?
Concept: undefined >> undefined
Which natural materials are used to obtain fibres?
Concept: undefined >> undefined
What are we used for?
Soil
Concept: undefined >> undefined
What are we used for?
Wood
Concept: undefined >> undefined
What are we used for?
Nylon
Concept: undefined >> undefined
What are we used for?
Paper
Concept: undefined >> undefined
