Why do people believe some theories even if they are not supported by credible evidence?

Which of the following is the main purpose of a human community?

What protects the lining of the stomach from acidic gastric juices?

This is the amino acid cysteine. circle the amine group, put a box aroundthe carboxylic acid group and use a different colored pencil/pen to circle the sidechain (r group). h o | ||nh2— c- c-oh | ch2 | sh