Questions

Isotopes are variations of an element that have the same charge as the original element, but a different mass, which is caused by either more/less neutrons in the nucleus.

The first electric train of India was opened in 1925. The first electric train ran between Bombay (Victoria Terminus) and Kurla, a distance of 16 km.

Delhi: Latitude-28.38 N, Longitude-77.12 E

Chandigarh: Latitude-30.44 N, Longitude-76.47 E

Puducherry: Latitude-11° 54' N, Longitude-79° 48' E

Goa: Latitude-15°29'N. N, Longitude-73°48'E.

The size of the pupil is controlled by the Iris when light enters the eye.

The United States subprime mortgage crisis was a nationwide financial crisis, occurring between 2007 and 2010, that contributed to the U.S. recession of December 2007 –June 2009.It was triggered by a large decline in home prices after the collapse of a housing bubble, leading to mortgage delinquencies and foreclosures and the devaluation of housing-related securities.

Amphibians are one of the most sensitive groups to change, whether that is caused by habitat loss, invasive species, disease, trade or climate change. Their sensitivity to environmental threats has been generally linked to the observation that amphibians are characterized by a rather permeable skin. Given their complex life cycles and other traits, amphibians are often recognized as indicators of ecosystem health.