Irina,Connor,Ashley

1. It has been several weeks since Goodboy Player has completed a tennis match. After the match he discovers that a blister has formed beneath an old callus on his foot and the callus has fallen off. When he examines the callus he discovers that it appears yellow. Can you explain why?

It appears yellow because of carotene, which is a yellow pigment which builds up in lipids

2. Pulling on hair can be quite painful, yet cutting hair is not painful. Explain.

because when you cut your hair you are not ripping out the hair follicle and not disturbing the nerves.

when you rip them out you are ripping the nerve and then the hair endings out of your skin which causes the nerves to be distrubed and make it painful

Consider the following statement: dark-skinned children are more susceptible to rickets (insufficient calcium in bones) than fair-skinned children. Defend or refute this statement I dont think the statement is accurate because rickets dont have anything to do with skin color, rickets are caused by the lack of sunlight which is necessary for Vitamin D production by the body, it depends on the amount of vitamin D the child has in thier body and based on how much vitamin D they accumulate in their diets.