Where do new diseases most commonly originate?

Select one:
a. Crowded cities
b. Pathogens that jump to humans from other species
c. China
d. Pollutants that contaminate water resources

Question

Where do new diseases most commonly originate?

Select one:
a. Crowded cities
b. Pathogens that jump to humans from other species
c. China
d. Pollutants that contaminate water resources

ramirocruzo · Answer

Lol Why is China in there??? :p

ramirocruzo · Answer

Whats you opinion???

anonymous · Answer

lol I don't know that was one of the choices

anonymous · Answer

But I belive its B

ramirocruzo · Answer

Well thats exactly what I think too.... @shortyyshayy

anonymous · Answer

The bacteria in our colons receive nutrients as waste passes through the digestive system and synthesize vitamin K, which the human body then uses.  This is an example of

Select one:
a. commensalism
b. parasitism
c. mimicry
d. mutualism

What about this question? A?

ramirocruzo · Answer

Its Mutualism mi amigo......means that both the E. coli and its human host benefit from the bacteria residing in the intestinal tract.

anonymous · Answer

So not commensalism?

ramirocruzo · Answer

Hey I get confused in these terms.......

ramirocruzo · Answer

But in commensalism one organism benefits from the other without affecting it.