Answer:
None of the listed answers is correct
Explanation:
During normal digestion, the esophagus which is a muscle ring called the lower esophageal sphincter (LES) opens to allow food to pass into the stomach and then quickly closes to prevent backflow into the esophagus. When the LES has a malfunction, contents from the stomach, including food and digestive juices, such as hydrochloric acid, can push up into the esophagus creating gastric acid.
Answer: a,b,c,d
Explanation:
all four of them are characteristics in all living organisms. All living things will grow and change, it will move otherwise it wouldn’t be able to get the nutrients it may need (or run away from predators), in order for the species to go on, they must reproduce, and they must maintain homeostasis so that they don’t freeze of burn to death. but however, it is not required for the living organism to be made up of only one cell, take humans for example.
B)
Because it flows. I dunno about you, but that sounds like a liquid to me! Sorry if i'm wrong.
Answer: It is valid because it is backed by scientific evidence.
Justine is a chemist, a scientist who does research and experiments with the properties of chemical substances.
<span>Justine developed the formula in her lab and made sure that every aspect was controlled. She repeated her experiment several times and made sure that the formula was correct and that the company’s claim is valid.</span>
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