Karen described the upper respiratory infection (URI) that she suffered last year and thinks that her well being is a matter of fate. Conduct research to How many infectious agents cause URI? How can these infections be prevented? How can they be treated?

a)many bacteria and various can course URI's

b) coughing into the elbow,washing hands and not sharing drinks With others will help in the preventing of the disease.

c) if its a bacteria take Antibiotics, if viral let it run its course,take lots of fluid,take vitamins and rest.

1. Infectious agents cause upper respiratory infection are viruses(rhinoviruses,and Enterovirus).

prevention: handwashing and disinfecting contaminated objects

treatment: supportive therapy, vapour rub

            using prophylaxis,

            probiotic   (vitamin C, Garlic , Nasa saline irrigation

Explanation:

Upper respiratory infection is caused by viruses like enterovirus and rhinoviruses. the symptoms of URI are nasal congestion, running nose, nasa breathing, sneezing, nasal discharge, painful when swallowing and others.

We can be prevented from this by washing our hand regularly, disinfecting any contaminated or material before use, use of Garlic and Vitamin C.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects