Based on your set of drawings from task 1 and the pattern you see, draw in the Moon phases you didn't observe. (There are probably seven missing drawings covering two primary Moon phases.) Draw them in the circles provided.

Answer(a)   the matererials that are in contact, the two materials and the nature of their surfaces/// (b)/// the force pushing the two surfaces together, pushing the surfaces together causes the more of the asperities to come together and increases the surface area in contact with each other

The capital letters and lowercase letters smoothly run together without lifting the pen

Chromium  +  hydrogen sulfate  =  chromium(iii) sulfate  +  hydrogenso then it will be  a. cr + h2so4? cr2(so4)3 + h2