Carbohydrates are technically hydrates of carbon; structurally it is more accurate to view them as polyhydroxy aldehydes and ketones. The term is most common in biochemistry, where it is a synonym of saccharide, a group that includes sugars, starch, and cellulose.
A human head will typically range from 54 to 57 inches in circumference. The length is on average 21 to 22 inches and the width is 17 to 18 inches.nswer by dwammer (710). The average size of the human head is 22 inches long and about 18 inches wide. The average circumferance is 55 inches around the head. add a comment.
There was! The national average is estimated to fall between 22 and 23 inches, but there is no current government data on adult head size. Science has other stuff going on, guys. But, there is at least one head-related profession that's sure to have the facts: hatmakers.I called on Molly Yestadt of Yestadt Millinery to see if she'd heard this complaint before.Instantly, she replied: I hear it all the time.ut, there is at least one head-related profession that's sure to have the facts: hatmakers. I called on Molly Yestadt of Yestadt Millinery to see if she'd heard this complaint before. Instantly, she replied: I hear it all the time.