Answer:
Frequent urination
Excessive thirst
Unexplained weight loss
Extreme hunger
Sudden vision changes
Tingling or numbness in the hands or feet
Feeling very tired much of the time
Very dry skin
Sores that are slow to heal
More infections than usual
Some people may experience only a few symptoms that are listed above. About 50 percent of people with type 2 diabetes don't experience any symptoms and don't know they have the disease.
Explanation:
There are five main types of pathogenic organisms. This includes viruses, bacteria, fungi,.protozoa, and worms. For example, spores of fungus emerge from soil and once inhaled can germinate the lungs and transform into budding yeast cells.
Some reminders are necessary:
Artery does not have valves, the blood pressure on it is very high, there is no risk of blood backflow, so it does not need valves
Arteries are vessels that transport blood from the heart to capillaries.
Veins are vessels that transport blood back to the heart from capillaries.
According to these reminders, you could conclude that:
A is false (no backflow in arteries)
C is false (no backflow in arteries)
D is false ( veins take blood to the heart)
so the right answer is B
