Why is nutrition a necessity for an organism? a. It provides energy for the various metabolic processes in the body. b. It is essential for the growth of new cells and the repair or replacement of worn-out cells. c. It is needed to develop resistance against various diseases. d. All of the above.

What type of questions asked from the lesson of magnetic effect of electric current 

Wavelength of green light is

A) 400-450 nm

B) 500-550 nm

C) 660-720 nm

D) 720-800 nm

What is the difference between anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?

What are the main components of our environment? Explain each of them briefly.

What are examples of hydrotropism plants?