Exams

OS-2 operating systems is produced by IBM. It also created it's own version of DOS called PC-DOS.

The term market in economics refers to the place or arrangement where the buyers and sellers come to contact directly or indirectly for buying and selling goods. Market refers to not a specific or particular place it is the place for commodities..

From the history,

The Erie Canal was completed in 1800's

The signing of the Declaration of Independence in 1776 and after that the American Revolution was started in the same 1776.

The Iroquios Confederacy was formed early when the Europeans first began comonizing, may be early in 1600's.

So, from the above data of history, Iroquois tribes formed the Iroquois Confederacy was the event that occured first among the options.

World Wetlands Day is celebrated every year on 2nd February. This year’s World Wetlands Day under the theme of "Wetlands and Climate Change".

The proteins of the electron transport chain are present in mitochondrial inner membrane in Eukaryotes.