Which of the Following Can Be Completely Degraded to Carbon

Question

Which of the following can be completely degraded to carbon dioxide by microorganisms?
A) petroleum
B) uranium
C) chlorinated organics
D) petroleum and chlorinated organics

Accepted Answer

Petroleum and chlorinated organics can be completely degraded to carbon dioxide by microorganisms. Uranium cannot be completely degraded by microorganisms, and while some chlorinated organics can be degraded, not all can be completely broken down to carbon dioxide.