Sunshine may help babies grow tall

1.	Calculate the average increase in height of an average 6ft man due to a 4.6% 	factor due to the month of birth?

2.	What other factors besides sunlight might affect the growth of babies?

3.	a) In which part of the brain is the human growth hormone (HGH) produced?
 	b) What are the consequences of secretion of too much or too little of this 		hormone during childhood and adolescence?
	c) Since HGH is also known to stimulate milk production in mammals could 	this have an effect on the growth of babies?
 
4.	How does the hormone melatonin cause the skin to darken after sunbathing?