Question

A letter to my friend about the importance of modern educational system

Answer 1

State two economically important uses of

(a) Heterotrophic bacteria

(b) Archaebacteria. Maintain soil fertility by nitrogen fixation, ammonification and nitrification, e.g., Rhizobium bacteria (in the root nodules of legumes). The milk products such as bufter, cheese, curd, etc., are obtained by the action of bacteria.

Answer 2

Explanation:

Thunderstorm, a violent short-lived weather disturbance that is almost always associated with lightning, thunder, dense clouds, heavy rain or hail, and strong gusty winds. ... Thunderstorms arise when layers of warm, moist air rise in a large, swift updraft to cooler regions of the atmosphere.