Which of the following would you describe as a public health issue?

a.
a sudden outbreak of cholera
b.
a man having an operation due to food poisoning
c.
a candy store opening up in town

A. a sudden outbreak of cholera.

Explanation:

Cholera is a bacterial infection caused by bacterial strain Vibrio cholera. It is transmitted by consumption of contaminated food and water. Typically, use of water contaminated with sewage discharge. The symptoms include vomiting, cramps, diarrhoea, dehydration, sunken eyes and cold skin.

According to the given situation, a public health issue can be a sudden outbreak of cholera. This is because of the fact that if an usable water source by a large human community get contaminated with bacteria Vibrio cholera then it will likely to cause cholera on large scale.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

the wires in the toaster turning red and the toast crisping and turning brown