PLEASE HELP ME Which atmospheric gas is the lightest?

A. argon
B. methane
C. ozone
D. hydrogen

What is the sequence of amino acids corresponds with the rna strand ucg ggg cac

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Select three sports that require participants to be highly fit before the beginning a: snowboarding b: skydiving c: rock climbing d: bungee jumping e: free diving f: hiking