It is known that the Earth's orbit around the sun changes shape every 100,000 years. The orbit becomes either more round or more elliptical at these intervals. The shape of the orbit is known as its "eccentricity." A related aspect is the 41,000-year cycle in the tilt of theEarth's axis.
The first answer should be the right one
Cholera is caused by the bacterium, Vibrio cholerae and produces CTX (cholera toxin, choleragen)...