Crystal is a material growing inside out oppose to a bird that is hatched from an egg
Answer: A( adenine) G (Guanine) C (Cytosine) T (Thymine) U (Uracil)
Why? Nucleic acids are polynucleotides—that is, long chainlike molecules composed of a series of nearly identical building blocks called nucleotides. ... Each nucleic acid contains four of five possible nitrogen-containing bases: adenine (A), guanine (G), cytosine (C), thymine (T), and uracil (U).
2 strands of DNA=hydrogen bonds
2water molecules=polar convalent bonds
NACL=ionic bond
H2=ionic
