The ___ of amino acids in the chain and the of the chain determine what kind of protein it will be.

ability to bond woth oxygen

the fossil record provides evidence of a common ancestor to many species.

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )

cuz some people don't have enough food. that's why we need more ppl to donate food to the hungry.