Answer:
Binding the rna polymerase to the promoter sequence
A) species with short reproductive cycles
1. DNA and RNA I'm pretty sure
Refraction is the change in direction of waves that occurs when waves travel from one medium to another. Refraction is always accompanied by a wavelength and speed change. Diffraction is the bending of waves around obstacles and openings.
r u on edg
Explanation: if its edg i know it