Aerobes can't survive without oxygen
Answer:
• People without any symptoms may be infected and spread the SARS-CoV-2 virus.
• Upon speaking, the virus is released into the air, the louder the more.
• The virus can remain airborne for many hours in classrooms.
• Wearing masks is comparatively cheap and easy to implement and supervise.
• At the same time, wearing masks may have physical side effects.
• Face masks impair face recognition and face identification.
• Face masks impair verbal and non-verbal communication.
• Face masks block emotional signaling between teacher and learner.
Answer:
If it occurs in the coronary arteries, the end result could be a myocardial infarction (MI) or heart attack. The third way that periodontal disease can affect systemic health is that inflammation associated with periodontal disease may stimulate a systemic inflammatory response within the body.
Explanation: https://periolinks.com/2015/09/30/how-does-periodontal-disease-affect-systemic-health-a-simple-answer-to-a-complex-question/
(This link is where I got my answer)