Why is vinegar used in food preservation? A. The high pH and high acidity of vinegar destroy bacteria.
B.
The low pH and low acidity of vinegar destroy bacteria.
C.
The low pH and high acidity of vinegar destroy bacteria.

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km