Scientists have different methods to help clean up oil spills in oceans, including the use of strong chemicals and the use of bacteria. What is an advantage of using bacteria instead of chemicals?
Answer
A
Removal of the oil by bacteria is a slow process.
B
Bacteria likely cause less disruption to the natural environment.
C
Bacteria do not produce oxygen that could harm the oceans.
D
Removal of the oil by bacteria is more expensive than chemical methods.