Omnivores have teeth that are... A. sharp for piercing.
B. dull for grinding.
C. both sharp and dull.

I would say the answer is C: Both sharp and dull.

Explanation: Omnivores eat both plants and animals so they would need sharp teeth to hunt and dull teeth to grind down plants and other vegetation.

hope this helps you (:

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.