An infection constantly maintained at a baseline level in a geographic area without external input is known as

Consider the following features about a geographical phenomenon : 1. Torrents of snow and ice roaring down a steep mountain side 2. It is hazardous to skiers and mountaineers 3. It involves a mix of…

Which of the following statements with reference to L-Wave or Long Wave generated by an earthquake is/are correct? 1. They follow the Earth's circumference 2. They travel at more or less at a constan…

Consider: I. In a seismograph, P waves are recorded earlier than S waves. II. In P waves, particles vibrate to and fro in the direction of wave propagation; in S waves, particles vibrate up and down…

The area of calm and low-pressure conditions at the center of a tropical cyclone is called the

Consider the following statements: 1. In a seismograph, P waves recorded earlier than S waves. 2. In P waves, the individual particles vibrate to and fro in the direction of wave propagation whereas…