Answer:
what do you even mean by this question it is improper
Explanation:
The physical barrier of the immune system is your body tissue and skin.
It is considered a third class lever because when you put effort into moving it is more effort on moving than the fulcrum of your arm
~<span>the effort is applied further from the fulcrum than the load</span>
Like they said it's helped a lot with contacting people faster and if anything bad was to happen to anybody you can get someone to come help because you technology and phones to help with that too but it's helped in a lot of ways . Hope this helps ! :)
Answer is C. By exposure to mucous membranes of an infected person
Blood borne pathogens are microorganisms which are transmitted through the blood. Blood borne infections can be transmitted in the blood or body fluid such as saliva, mucus that can be mixed with blood and cause diseases like Hepatitis B and HIV (Human immuno deficiency virus). The most common method of transmission of pathogen through blood of an infected person when enters in the body of a healthy person through open wound.
