There are 7 crystalline systems.
<span>triclinic, monoclinic, orthorhombic, tetragonal, trigonal, hexagonal, and cubic.</span>
An MRI is needed when doctors think there is inflammation, a tumor, or something medically wrong with the brain that we can't see on the outside.
Fruit flies can<span> lay up to 500 eggs at a time near the surface of fermenting (ripening) </span>foods<span> or other organic materials. </span>
