What advantage over an aquatic organism does a terrestrial organism have with the regard to obtaining oxygen for the respiration? a. Air contains about 21% of oxygen while water has 1% oxygen in dissolved state. b. A terrestrial organism is able to get several more times oxygen than an aquatic animal. c. Both A and B. d. None 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?