12. Tuberculosis (TB), which was once almost
eradicated, is becoming more common, even
in developed countries, because
a. new varieties of the tuberculosis pathogen
have evolved in rodents.
b. livestock are given antibiotics.
c. the pathogen that causes TB breeds in pol-
luted water.
d. some populations of the pathogen that
causes TB are resistant to the antibiotics.

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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the answer is c on e2020, bud.

c. establishing proper sleep hygiene