Cholera is caused by the bacterium, Vibrio cholerae and produces CTX (cholera toxin, choleragen)...
I think it might be the first one: hiv infections. (hope this helps!)
Answer:
a role of a organism in a ecosystem
Explanation:
i hope this helps
I believe you mean mid-ocean ridge?
If so, true.
A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics.
This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.
A mid-ocean ridge demarcates the boundary between two tectonic plates, and consequently is termed a divergent plate boundary.