Immunology is the study of diseases associated with excesses and deficiencies of the immune system.
<h3>What is immune system?</h3>
A network of biological processes called the immune system guards an organism against disease. It recognizes and reacts to a wide range of pathogens, separating them from the organism's own healthy tissue, including viruses, parasitic worms, cancer cells, and things like wood splinters. There are two main immune system subsystems seen in many species. The innate immune system responds to a variety of events and stimuli in a predetermined way. The adaptive immune system learns to recognize chemicals it has previously met and responds to each stimulus in a way that is specific to that stimulus. Both rely on molecules and cells to carry out their respective tasks.
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Which one of the following choices is an effective way to prevent low-back pain?
c. maintain correct posture.
Answer:
I personally think they should reduce it from 6 feet to 3 feet because: Normally we stay 6 feet apart in case someone sneezes or coughs,(In schools also, not just in public), but there is no need to stay that far away; 3 to 4 feet is enough. Plus, in schools, friends want to socialize more, but that is not easily done when you are 6 feet apart. And, you do get tested a lot if you go to school, so if someone has virus symtoms, they probly will stay home and not go to school.
Hope this helps, and have a good day.
