Answer:
D. both a and b
Explanation:
If you have ever experienced a heart burn or gas build up then those are your symptoms of epigastric pain (pain in upper abdominal region) and bloating (gas).
Beware, gastritis is different than gastroenteritis. Gastritis is only talking about stomach and inflammation whereas, gastroenteritis talks about both stomach and intenstines. Thus, gastroenteritis might cause diarrhea but gastritis will not.
Answer:
usually around two to four weeks
Explanation:
Highest risk body fluid would be blood because it has high nutritional value and pathogen is multiplying on there. Most pathogen will be transmitted by blood.
Droplet from cough also highly contagious since it easily contacts with any part of the body. Inhalation also makes the infection easier since it contacts mucosa.
Vaginal secretion and seminal fluid can transmit many virus but it depends on how many virus in the blood.
Saliva is composed by water and enzyme so it's low risk on virus spread. But it's on the mouth(which wasn't sterile) so it can be contaminated by various things.
In normal condition urine and spinal fluid is sterile, but in a case of infection, it can be contaminated.
Sweat is mostly water and salt so it's safe.
Cardiovascular system is often compared to a city.
The answer is b . It can help improve the poor posture responsible for back pain
