A convex lens makes light rays converge (come together) at the focal point or focus. The distance from the center of the lens to the focal point is the focal length of the lens. Convex lenses are used in things like telescopes and binoculars to bring distant light rays to a focus in your eyes.
Yep it is. Defiantly the circulatory system
You have a photo? I could help you if you show me a picture!
D. Collect more evidence and try to convince the other scientist
