Which of the following gases , released by ruminant animals and termites as a waste product of digestion , can add to global warming ? ?
a. carbon dioxide (co2)
b. methane (ch2)
c. chlorofluorocarbon (cfc)
d. nitrogen (n2)

B. Methane (Ch2) is released by animals and contributes to global warming

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides