Answer:
they are expensive is the answer
<span>The energy of the photon is directly proportional to frequency.
'cause when frequency increases, it's energy also increases
So, option A is your final answer!
Hope this helps!</span>
Answer:
C) esophagus - moves air from the nose into the lungs
Explanation:
The oesophagus is a muscular tube with a sphincter valve at each end. Its main function is to transport food and fluid, after being swallowed, from the mouth to the stomach.This is propelled from the pharynx into the oesophagus, and towards the stomach in a peristaltic waves. The peristalsis also pushes food along the alimentary canal
