Bacteria,viruses,fungi,and protozoa
Bacteria can be helpful
Answer: WHO defines health as something that goes beyond the absence of disease.
Explanation: Health can be defined as a state of physical, mental, and social well-being. For a long time, it was believed that health is simply not having a disease. Over time, this has been changing since a person who is well physically but not mentally, is someone who is not healthy.
The well-being of a person involves more than not being sick. It involves feeling good in all aspects, where the person is able to deal with everyday situations.
Answer:
the esophageal sphincter
Explanation:
This muscle opens and lets food and liquid enter the stomach and closes to prevent the food and liquid from leaking back into the esophagus, however if it is not working properly it could open and close at the wrong times
Answer: oxidation is when something takes in oxegen
