A chromosome is a Deoxyribonucleic acid molecule with part or all of the genetic material of an organism.
The simplest optical microscope<span> is the magnifying glass and is good to about ten times (10X) magnification. The compound </span>microscope<span> has two systems of lenses for greater magnification, 1) the ocular, or eyepiece lens that one looks into and 2) the objective lens, or the lens closest to the object.</span>
A Limestone rock thats my answer
