Answer: A convex lens is used to converge ligtht.
Explanation:
A concave lens is a lens that is thicker on the ends than in the middle. As consequence of this, a concave lens diverges (separate) the rays of light. A concave lens is also called diverging lens.
A convex lens is is thicker in the middle than on the ends. As consequence of this, a convex lense converge the parallel rays that pass through it. A convex lens is also called converging lens.
Well scientific laws are really laws! You can't change a scientific law and laws can be facts as well. Hope this helps!
A reaction between to acids
It should be D, cells are parts, tissue is part and organ is part of a system.
