(a) what is meant by diffusion? give one example of diffusion in gases. (b) why do gase diffuse very fast?
(d) Name two gases of air which dissolve in water by diffusion. what is the importance of this process in nature?
please answer it fast

What must happen before a body cell can begin mitotic cell division

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Explain that newton first law,second law and third law of motion?