Force and pressure. — Science STD 8 — Question

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The use of plastics can be reduced by using bags made of _______ or ______ instead of polythene bags.

For eradication of tuberculosis everybody should be vaccinated by …………. vaccine.

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The same kind of plants grown and cultivated on a large scale at a place is called _______.

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Ursa Major constellation appears to revolve around the __________ star in the night sky.

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The changes which occur in boys and girls at puberty are brought about by various _________________.

An …………… is a specialized subunit having specific function within the cell.

Homeostasis is maintained in the cell by ………….. .

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Cells make up ____________________.

The central point of earthquake is the point above the ……………. on the earth’s surface.

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Burning of wood and coal causes ________ of air.