How can a bat's wing be considered both a homologous structure and an analogous structure

Why is a dominant allele called dominant

Sarah is sitting at the top of the slide in the schools playground. which will increase sarah’s kinetic energy a- an additional child is added to the top of the slide. b- sarah is pushed and moves down the slide. c- sarah climbs down the ladder and off the slide. d- the ladder is moved to the other side of the yard.

How do antiviral drugs work? in your own words.