General Science Questions

photorespiration lowers the efficiency of photosynthesis by removing ribulose bisphosphate molecules.

Iron reacts with oxygen in the presence of moisture or water to form a red oxide called rust and the reaction involved is called as Redox reaction.

Here all the options given are important functions of Earth's atmosphere.

The main cause of Tsunami is Earthquake on Sea Surface.

In 2006, pluto devoted to a draft planet.

The air around us is a mixture of gases, mainly nitrogen and oxygen, but containing much smaller amounts of water and other gases.

Earth's atmosphere is composed of many gases. Their percentages by volume is given by::

 
78% Nitrogen,

21% Oxygen,

0.9% Argon, and

0.03% Carbon dioxide 

And very small percentages of other elements.