Week 10

Question 1

Sources of water pollution?

Answer 1

Agricultural (Leading)
Industrial
Mining

Question 2

Cultural Eutrophication

Answer 2

Excessive nutrients from human activities accelerate the input of plant nutrients to a lake
Most nitrate - and phosphate containing effluents

Question 3

Cultural Eutrophication Prevention?

Answer 3

Waste treatment
Banning or limited phosphates
Soil conservation and land use control

Question 4

What is atmosphere?

Answer 4

Thin layer of gases surrounding Earth
Layers characterized by abrupt changes in temperature
Atmospheric pressure

Question 5

What is troposphere?

Answer 5

Innermost layer
75% of earths air mass
Involved in chemical cycling

Question 6

What is stratosphere?

Answer 6

Ozone o3 filters 95% of harmful UV

Question 7

How do scientists study climate change?

Answer 7

Geologic records
Ice cores
Sediment cores

Atmospheric measurements
Temperature measurements
Chemical composition of air