Which of the following is a common downside of net pens, one of the most common forms of aquaculture?
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A - overcrowding
B - disease
C - the use of antibiotics
D - escapes
All of the above
All of the above are downsides to bets pens. Overcrowding causes disease and leads to the use of antibiotics. Escapes lead to contamination of natural or free sea life.
