Question

question 15
2 pts
what is a measure of the cloudiness of water, caused by sediment pollution?
alkalinity
turbidity
conductivity

question 16
2 pts
dead zones are areas of water that have dissolved oxygen levels less than 2 ppm. these are referred to as areas of _______________.
hypoxia
turbidity
hard water
groundwater pollution

Explanation:

• Question 15: Turbidity measures cloudiness due to sediment. Alkalinity relates to pH - buffering capacity, and conductivity is about electrical conductivity.
• Question 16: Hypoxia is low - oxygen (dissolved oxygen < 2 ppm). Turbidity is cloudiness, hard water has high mineral content, and groundwater pollution is contamination of groundwater.

Answer:

Question 15: Turbidity
Question 16: Hypoxia