Complete the Focus Question in your SDR then discuss it as a class.

ANALYZE IT

Complete the Analysis Questions in your SDR then discuss them as a class.

• What is dissolved oxygen? 
• Why is dissolved oxygen important in watersheds? 
• What instrument did you use to measure dissolved oxygen content? 
• What factors can affect the dissolved oxygen content of a watershed? 

GET FOCUSED

• How do the abiotic factors of temperature, water velocity, salinity, and dissolved oxygen affect a watershed?