Apopulation of walleye increased from 1200 to 3700 from 2004 to 2006 what is the growth rate?

The growth rate is 1250 per year.

Explanation:

The initial population is 1200, and

Final population is 3700.

So 2500 population were increased in (2006 - 2004)= 2 years.

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