epDisolved+oxygen+study

=Project Search Study Guide= Water Test: Dissolved Oxygen

1.) How does dissolved oxygen get into the water? diffusion threw air.

2.) Why is it important to the ecosystem? more plant and animal can live in a pond that has the right lvl of oxygen

3.) How do humans impact the levels of Dissolved Oxygen? sewage and fertilizer

4.) What does it mean to fix the oxygen? Why did we need to do this? to prevent oxygen from entering or exiting the water.

5.) What are some of the precautions you need to take in this lab? goggles,gloves,z do not ingest or get on skin.

6.) What is titration? adding a liquid slowly to another liquid

7.) How do you read a direct reading titrator? from the tip of the plunger