Biochemical reduction of nitrate to nitrite or gaseous nitrogen is called ________________________?

Related Mcqs:

The inner shell of earth consists of_____________________?

A. Fe B. Silicate C. Mg D. Silicate of Fe & Mg...

Color of fertile soil is_____________________?

A. White B. Green C. Brown D. Black...

The soil of Sindh (Pakistan) have pH______________________?

A. 5.0 to 6.5 B. 6.5 to 7.5 C. 7.5 to 8.5 D. 8.5 to 9.5...

Mean annual precipitation for tundra region is ____________________?

A. 70-80 cm B. 150-70 cm C. 0-50 cm D. None of the above...

Algal photosynthesis increases pH of water and releases___________________?

A. O2 B. CO2 C. SO3 D. All the above...