What kinds of bonds between keratin molecules are altered when hair is (a) wet and allowed to dry on curlers and (b) given a permanent wave?

What did hunter gathers do to alter the environment?

Twin boys have girlfriends one of the couples have a baby would the dna of the lil baby be the same as the couples dna bc the boys are identical twins

How do you date a sample of rock that you suspect as being one of the earliest on earth