# Environmental Science MCQ

## Click on any option to know the CORRECT ANSWERS

 Question 21
Definition of ecosystem is
 A The community of organisms together with the environment in which they live B The abiotic component of a habitat C The part of the earth and its atmosphere which inhibits living organisms D A community of organisms interacting with one another

 Question 22
The Red Data book which lists endangered species is maintained by
 A UNO B WHO C IUCN D WWF

 Question 23
At which temperature would the earth be radiating energy at the greatest rate or intensity?
 A -5$^{o}$ F B -40$^{o}$ F C 60$^{o}$ F D 105$^{o}$ F

 Question 24
The organic matter produced by the Photosynthetic activity of green plants is called as
 A light energy B cellular process C energy flow D Primary productivity

 Question 25
The most abundant gases in the earth's atmosphere by volume are:
 A Carbon dioxide and nitrogen B Oxygen and water vapor C Nitrogen and oxygen D Oxygen and helium

There are 25 questions to complete.