Which one of the following is the best description of the term ‘ecosystem’?
A community of organisms interacting with one another
That part of the Earth which is inhabited by living organisms
A community of organisms together with the environment in which they live
The flora and fauna of a geographical area
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy