Note the text states 200 mcg/L in premenopausal females and 300 ?g/L in men and postmenopausal women (page 220). Iron overload exists when ferritin levels are higher than:

Which of these is NOT a by-product of combustion?

A) Carbon dioxide (CO2) B) Water (H2O) C) Carbon monoxide (CO) D) All of the above are by-products.

The digestion of food begins in the stomach

a. True b. False Indicate whether the statement is true or false