What kind of bond holds the nitroenous bases together

According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..

What advantages does a pedigree have over a written passage?

What should be the strand of complementary dna produced by the strand of dna shown below cgt ata