All of the following are problems of aquaculture except: select one: fish that escape from the pens may be invasive species in their new ecosystem it increases the need for fishing of wild species in the open ocean pens anchored near shore spread pollution from feces and excess food mangrove forests and wetlands are destoyed to make space for aquaculture pens

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answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c