waves do not require a medium, so can travel through a vacuum a)Electromagnetic
b)Sound
c)Ocean
d)Longitudinal

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an