LG+Study+Guide+-+Dissolved+Oxygen

=Project Search Study Guide= Water Test: Dissolved Oxygen

1.) How does dissolved oxygen get into the water? Through diffusion (air) and photosynthesis (Aquatic plants)

2.) Why is it important to the ecosystem? So aquatic animals can breathe

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

4.) What does it mean to fix the oxygen? Why did we need to do this? Keeping the oxygen from diffusing out

5.) What are some of the precautions you need to take in this lab? Wear goggles, and gloves if necessary

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

7.) How do you read a direct reading titrator? Each division is 2