In dna copying, the bonds between the nitrogen bases are broken down by a(n)?

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

What are the similarities between compounds and mixtures?