Natural selection is called ‘survival of the fittest’. Which of the following statements best describes an organism? (a) How strong it is compared to other individuals of the same species. (b) How much food and resources it is able to gather for its offspring. (c) The ability to adapt to the environment in the niche it occupies. (d) The number of fertiie offspring it has.

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?