Which illness can be contracted by drinking contaminated water?

a: botulism
b: e. coli infection
c: salmonellae
d: gastroenteritis

The answer is D . Would you like me to explain ?

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products