Dissolved Oxygen

What is the typical range of DO in an aquatic ecosystem?

• 0-10 mg/l

• 0-14 mg/l

• 0-20 mg/l

• 0-100 mg/l

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the "critical" level of DO, meaning most aquatic organisms become stressed and die below this amount?

• 0 mg/l

• 5 mg/l

• 10 mg/l

• 50 mg/l

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the meaning of the word "anoxic"

• low oxygen

• high oxygen

• no oxygen

• above average oxygen

Tags

NGSS.HS-LS2-3

Which of the following supports a higher amount of Dissolved Oxygen in a body of water? (Select ALL that apply)

• increasing temperature

• increasing aeration

• decreasing temperature

• decreasing aeration

Tags

NGSS.MS-LS2-4

Which of the following would lead to an increase in dissolved oxygen in a body of water?

• warmer temperatures

• thermal pollution

• photosynthesis

• cellular respiration

• hypoxia

Tags

NGSS.MS-LS1-6

Which of the following would lead to a decrease in dissolved oxygen in a body of water? (Select all that apply)

• photosynthesis

• thermal pollution

• wind

• rapids

• turbid water

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which organism listed below needs the most oxygen?

• aquatic worm

• spot

• anchovy

• striped bass

Tags

NGSS.MS-LS2-1