Question

question:
which of these is a source of minerals that does not damage the sea floor?

answer options:
select one of four
fracking
polymetallic nodules
deepwater drilling
oil rig

Explanation:

• Fracking is hydraulic fracturing for oil/gas, not sea - related mineral extraction without sea - floor damage.
• Polymetallic nodules are found on the ocean floor and can be collected with methods that don't severely damage the sea floor (compared to others).
• Deepwater drilling is for oil/gas and can damage the sea floor.
• Oil rigs are used for oil/gas extraction and can harm the sea floor.

Answer:

B. Polymetallic nodules