Micro-Organisms: Friends and Foe — Science STD 8 — Question

Give the name of young one of cat and frog

Name the major component of natural gas.

State whether the following statements are True or False. Correct the false statements
Plants of a particular area are collectively termed as fauna.

Abida and Ramesh were doing an experiment in which water was to be heated in a beaker. Abida kept the beaker near the wick in the yellow part of the candle flame. Ramesh kept the beaker in the outermost part of the flame. Whose water will get heated in a shorter time ?

Is the decomposition of the bodies of dead plants and animals by microorganisms desirable ?

Will the lightning conductor still working, if it was made out of plastic instead of metal?

Is the speed of sound more in water or in steel?

What do you mean by dispersion of light?

If a body is moving on rough horizontal surface towards east, then in which direction the frictional force will act?