Which of the following describes a crystal? * A homogeneous solid
has a highly ordered microscopic structure
has a geometrically regular form
All of the options describe crystals

a:

by the combination of an unlimited number of elements

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?