Questions

The fireworks exhibition had awesome effects.

The fall of the Czar is known as February Revolution because, according to the old Russian calender, it occured on 27 February 1917.

A food chain is the only chain we can eat.

Prices do not reflect the full social cost of production is an example of Market failure.

A market failure occurs when the supply of a good or service is insufficient to meet demand. This results in an inefficient distribution of resources among market participants.

It also occurs if externalities are not accounted for.

If a firm fails to maximize its profits this is not a general market failure.

Veins seen in the leaves, serve the function of Transpiration.

Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. 

The most important polymer present in the nucleus is DNA- the master molecule. It is a polymer of Nucleotides.