What does an ecopsychologist study?
Most communicable diseases are either bacterial or viral and infect the respiratory tract.
B.
All communicable diseases are viruses that cause pneumonia.
C.
Most communicable disease are bacteria and viruses that infect the intestinal tract.
D.
All communicable diseases are bacteria that grow in the respiratory tract.
after reading this:
A communicable disease is an illness transmitted through contact with microorganisms. People, animals, food, surfaces, and air can all be carriers of the microorganisms that pass infectious illnesses from one host to the next. The exchange of fluids or contact with a contaminated substance or individual may be enough to allow a communicable disease to spread.
what do you think the answer is?
Most communicable diseases are either bacterial or viral and infect the respiratory tract.
Communicable, or infectious diseases, are generated by microorganisms such as parasites, fungi, bacteria, and viruses, which can be spread, directly or indirectly, from one person to person.
A majority of upper respiratory diseases are due to self-limited viral epidemics. Occasionally, bacterial germs may produce upper respiratory infections. Most often, upper respiratory virus is communicable and can spread from person to person by breathing respiratory droplets from coughing or sneezing.
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hope it helps