Pond

... has to spend time waiting for more CO2 to arrive). Increasing the concentration of CO2 increases the rate of photosynthesis. Experiment Place a pond weed Elodea upside in a test tube containing water at 25°C. Place the tube in a beaker of fresh water. Place excess sodium bicarbonate (NaHCO3) ...

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... biology we've observed, but pure water itself is not alive. The study of pure water falls under chemistry, not biology. Of course, once you have pond scum all that changes and it's biology all the way down.

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... definition, but I don't understand this. I feel like I'm almost there, but not quite. Problem: Health department workers recently tested a small pond at the back of a housing development and found it to have an extremely high level of coliforms. A stream that begins at a spring approximately ...

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... pathogen. Not really how sure it is in our environment because I've only see that amoeba in the video in 2 places. An old barrel and a very small pond.

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... It has been sitting in my yard for about 2 years now. At one time someone used the barrel to burn trash. The other place was a near by very small pond that cows drink water from. I felt the urge to go check out that water after reading about amoeba's. I live in Texas very close to the coast near ...

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