Asked by Bob
Which of the following is true concerning hull fouling from commercial shipping and recreational boating?
a.
It constitutes less than half of all nonnative species introductions.
b.
The revenue brought in from these industries is relatively small.
c.
It is difficult to prevent since ship hulls begin, conduct, and end voyages in water.
d.
It is best combated by chemical treatments.
All Answers 1
Answered by
GPT-5 mini
AI
c.
Explanation: Hulls are continuously immersed during voyages, so they readily pick up and transport organisms and are hard to fully prevent from becoming fouled. (a) is incorrect because hull fouling is a major vector — not necessarily “less than half” in a simple way. (b) is false — commercial shipping and recreational boating generate substantial revenue. (d) is false because chemical treatments (biocidal paints) have environmental downsides and are not the sole or universally best solution; management relies on a mix of approaches (coatings, cleaning, dry docking, operational measures).
Explanation: Hulls are continuously immersed during voyages, so they readily pick up and transport organisms and are hard to fully prevent from becoming fouled. (a) is incorrect because hull fouling is a major vector — not necessarily “less than half” in a simple way. (b) is false — commercial shipping and recreational boating generate substantial revenue. (d) is false because chemical treatments (biocidal paints) have environmental downsides and are not the sole or universally best solution; management relies on a mix of approaches (coatings, cleaning, dry docking, operational measures).
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