An example of a nonextractive resource provided by the ocean is ____.
A) transportation
B) crabs
C) oil
D) manganese nodules
Question 2
Aquaculture has been beneficial in enhancing productivity, but may have negative effects by ____.
A) increasing damage to structures from wind and wave energy in submerged pens
B) concentrating farmed fish waste through open-ocean systems
C) reducing the genetic diversity of wild fish from escapes
D) increases the amount of wasted feed by moderating the number of farmed fish in each pen
