Hepatitis
transmission- oral sex
symptoms- nausea, abdominal pain,dark urine, joint pain
treatment- no specific
influenza
transmission- air (coughing,talking,sneezing)
symptoms- pain in the muscles, cough, body chills, nasal congestion
treatment-fluids and activity modifications
cancer
possible causes- changes too genes, lifestyle factors, family history
symptoms- fatigue, weight loss or gain, eating problems, swelling or lumps
treatment- chemo, surgery, hormone therapy, bone marrow
There are numerous circumstances that give pathogens the chance to harm people.
The first occurs when an infection has already weakened the immune system. In situations like this, other pathogens may infect the host opportunistically and cause an infection. If the human host does not maintain proper personal and environmental hygiene, that is another condition. Many pathogens thrive in unclean environments, so by failing to maintain proper environmental hygiene, a person increases his risk of contracting a pathogen.
Finally, since so many pathogens are transferred by vectors, humans are more likely to contract the diseases that these vectors aid in spreading if they do not take the necessary precautions to stop their activity.
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Answer:
5.73mL of 50%
Explanation:
Let's say the amount of 50% solution to be used is, y
Therefore 37-y = the amount of 1/200 solution used
The set up will then be,
0.5y +0.05(37-y) = 1/6(30)
0.5y + 1.85 -0.05y = 5
0.55y = 3.15
y= 5.73mL of 50%