Exercise on paragraphs 13,14 — task. English Language State Board, Class 9.

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1. Why are boats more convenient forms of transport?

It barges through canals and rivers.
It is a faster mode compared to trains.

2. How is water the most uncommon of liquids?

It has amazing properties of sustaining life.
It is not available to all.

3. Why is investigation of properties of water far from an exhausted field of research?

It is an on-going and never-ending process.
It is an expensive field.

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