Each neutral element has a unique number of. Therefore, each element releases specific when jumping down from excited state. Each chemical element produces set of . Stars are made up of different . So we can identify the star’s by analyzing the spectrum.

i think it is true since you can test the answer and can use observations to complete it.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

i think it's letter a.