Questions

Radon gas is a source of natural groundwater pollution.

A reverse transcriptase (RT) is an enzyme used to generate complementary DNA (cDNA) from an RNA template by a process called Reverse Transcription.

In brief its function is that copies all or part of the virus RNA (retroviruses are RNA-only) as DNA which can then be integrated into the DNA of the host organism.

The first step is to disarm and secure detainees when supervising detainee operations.

When moon's orbit is closest to earth is called as Perigee.

The distance between the Moon and Earth varies throughout the month and the year since the moon's orbit around the earth is elliptical. The distance is about 382,900 kilometers from the Moon's center to the center of Earth.

Hence, the point on the Moon's orbit closest to Earth is called the perigee.

A SHADOW can crawl on the earth and can rise on the pillar.

A rotating column of air is called as a Tornado which extends from the thunderstorm to the ground.