A glass flask and sodium and hydrogen hope it helped
There are three main types of galaxies<span>: Elliptical, Spiral, and Irregular. Two of these three </span>types<span> are further divided and classified into a system that is now known the tuning fork diagram. When Hubble first created this diagram, he believed that this was an evolutionary sequence as well as a classification.</span>
Answer:
aphthous ulcers
Explanation:
I took a medical course so i know :D
PS: thank and nark me brainly plzzz
In a ring species gene flow occurs between neighboring populations of a species, but at the end of the ring populations don’t interbreed.