# data[].attributes.body
Solubility is the amount of a substance that can dissolve in a solution. In this case, dissolved oxygen has a set solulbility, or a maximum amount that can dissolve in a given volume of water at a given temperature. A higher temperature solvent, water in this case, can hold less of the dissolved substance, oxygen.

# data[].attributes.body
http://www.ramp-alberta.org/river/water+sediment+quality/chemical/temperature+and+dissolved+oxygen.aspx

# data[].attributes.headline
What are the safe and expected limits of dissolved oxygen?

# data[].attributes.subject
What are the safe and expected limits of dissolved oxygen?

# data[].attributes.body
The max solubility of oxygen in water at standard sea level air pressure can range from 15 mg/L at 0 degrees Celsius to as low as 8 mg/L at 30 degrees Celsius. This means that near freezing water can hold twice as much dissolved oxygen as warm water. Colder water is better able to hold dissolved oxygen and it is therefore better able to sustain life. The expected limit of dissolved oxygen at normal sea level air pressure falls between that range of 15-8 mg/L, but the "safe" range falls closer to 15 mg/L.

# data[].attributes.body
http://www.ucsusa.org/global_warming/science_and_impacts/science/human-contribution-to-gw-faq.html#.WejivyJSzrc

http://www.ramp-alberta.org/river/water+sediment+quality/chemical/temperature+and+dissolved+oxygen.aspx

# data[].attributes.body
http://www.aqua-sierra.com/causes-of-low-dissolved-oxygen-and-impact-to-fish/

https://water.usgs.gov/edu/dissolvedoxygen.html

# data[].attributes.body
http://www.fondriest.com/environmental-measurements/parameters/water-quality/dissolved-oxygen/

# data[].attributes.body
http://www.fondriest.com/environmental-measurements/equipment/measuring-water-quality/dissolved-oxygen-sensors-and-methods/

https://water.usgs.gov/edu/watercyclegwdischarge.html

# data[].attributes.body
As global sea temperatures rise around the world, the warming water is able to hold less and less dissolved oxygen. As this trend continues, more and more marine life will suffer and begin to die. This is important to note because it is widely accepted and proven that our burning of fossil fuels among other human activities are directly contributing to global warming.

# data[].attributes.body
Just as we need oxygen in the air to breathe, marine life needs dissolved oxygen in the water to breathe. If dissolved oxygen levels drop too much, many marine species can begin to suffocate and die.

# data[].attributes.body
Photosynthesis is the main contributor to the levels of dissolved oxygen a body of water. However the clarity and quality of the water can in turn effect the rate of photosynthesis.

# data[].attributes.body
Ground water discharge is the movement of ground water from one surface to another.
in areas where large amounts of ground water discharge finds its way into bodies of water, then the discharge can carry dissolved oxygen with it and increase the amount withing the body of water it is entering.

# data[].attributes.body
As areas become more developed and more populated, there is undoubtedly adverse affects that effects the surrounding bodies of water. Everything from chemicals to increased runoff effect a multitude of water quality factors,  including dissolved oxygen levels.

# data[].attributes.body
As the environment endures more human impact, the consequences could eventually be damaging, either short term or long term. By there being changes in the environment, it can disrupt the wildlife. The consequences will get more and more damaging over time. Some wildlife will parish.

# data[].attributes.body
Temperature is the amount of heat present in a substance.
As the temperature of the water fluctuates so does the levels of dissolved oxygen withing the water. Cold temperatures are capable of containing much larger amounts of dissolved oxygen in water, wile warmer temperatures result in lower levels.

# data[].attributes.headline
What factors affect dissolved oxygen levels?

# data[].attributes.subject
What factors affect dissolved oxygen levels?

# data[].attributes.body
Factors include temperature, ground water discharge,  and photosynthesis.

# data[].attributes.body
Dissolved oxygen is the measure of the amount of oxygen bubbles present in the water. The unit for this is DO. Dissolved oxygen in water helps to sustain life, such as fish or marine plants.