Questions

Belarus is a European country whose capital city is Minsk.

Brazil is one example of a closed economy in the given options. 

A closed economy is one that has no trade activity with outside economies. A closed economy is self-sufficient, which means no imports come into the country and no exports leave the country. A closed economy's intent is to provide domestic consumers with everything they need from within the country's borders.

Skimming is the removal of any material or particles that are floating on the surface. Hence, Removal of oil and grease from sewage - waste water is called as skimming.

The repeating units that are used to form the helical DNA structure are called nucleotides.

Sevagram

The design plans for the U-shaped skyscraper ‘The Big Bend’ in New York, hailed as the world’s longest building, have been revealed. The 4,000-foot long building will feature an elevator system that can travel in curves, horizontally and in loops.