Blood volume. If you are tired and no blood is able to get to your body and you heart keeps going faster your heart is probably going to fail.
Answer:
A polygenic trait.
Explanation:
A polygenic trait is where multiple different genes control a single trait. (Example: Eye color)
Answer:

You can actually use many words to describe a work of art which is of the highest quality. I'll prefer to use the word - <u>'Magnum Opus'</u> which in modern use is used to refer to a creation that has been given much critical praise, especially one that is considered the greatest work of a person's career or to a work of outstanding creativity, skill or profundity,.
Answer:
the eye of the storm or the storm shows how bad vaping can be, they illustrate a storm with how bad vaping is (if you want to say in your own words)