True or false ?

the total amount of water on earth remains constant because the total amounts of condensation and precipitation balance each other.

What claim did thorne make? what evidence supported his claim?

Which of these statements are true about scientific theories and hypothesis

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