Questions

The rungs or the sides of the DNA ladder is made of Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA i.e, A sugar (deoxyribose) and a phosphate.

Representative money is an item such as a token or piece of paper that has no intrinsic value but can be exchanged on demand for a commodity that does have intrinsic value, such as gold, silver, copper,...

Hence, a Check is an example of representative money.

Drowsiness is the state of feeling sleepyness and tired in the day time. It affects our senses especially the sense of vision.

It was the Qing Dynasty, who was a Manchu Dynasty whose rule ended in 1911 Chinese revolution.