How can modern technology scientists figure out what dinosaurs looked like?

Which way do the nitrogenous bases in dna pair up? a. a and g; t and c b. a and c; t and g c. a and t; g and c d. a and a; t and t; g and g; c and c

What element does susan b. anthony include in this passage to strengthen her argument?

This is so important ugh its 25 points