Miller Chapter 12 Food, Soil, and Pest Management



Miller Chapter 20 Water Pollution

Core case study-Lake Washington

Initial treats and problems

Solutions and successes

20-1

Water pollution

Point source

Nonpoint source

Three main sources/causes of water pollution

Use/spread of human made products pollution

Pollution effects amplified by climate change

Infectious agents as water pollution-numbers of disease causing agents and global death toll

Review tables 20-1, 20-2 and water testing

20-2

Streams naturally clean themselves unless what demands are put on them

Relationship between breakdown of biodegradable wastes by bacteria and DO-oxygen sag curve

How has stream pollution changed in developed countries?

What is the current outlook and issues for stream pollution in developing countries?

Riparian restoration-the man who planted trees to restore a stream

CASE STUDY India’s Ganges River

Importance of the river

Environmental issues of the Ganges

Pollution and dilution what are the issues to recovery?

Eutrophication

Cultural eutrophication (specific causes?)

EPA and its evaluation of cultural eutrophication

Revisit Lake Washington-successes and new issues

CASE STUDY pollution in the Great Lakes

Vulnerabilities of the Lakes

Progress? 2007 State of the Great Lakes report?

20-3

Why is groundwater more vulnerable to pollution that surface waters?

Threats to ground water?

CASE STUDY Natural threat from arsenic in groundwater

Where, why and who?

Prevention, how is that the only effective method to protect groundwater? (figure 20-13)

Methods of purifying drinking water

Developed vs developing countries differences

CASE STUDY protecting watersheds

How and why is New York City known for its water quality purity

What laws protect water quality?

Bottled water-friend or foe? And how well is it regulated?

20-4

Coastal areas and ocean pollution

Coastal human populations and pollution

2006 State of the Marine Environment Study findings

Cruise ships and pollutions?

HABs harmful algal blooms –causes and consequences

Dead zones?????

Ocean oil spills-ecologic and economic consequences

Figure 20-48-prevention and clean up

20-5

Reduction of nonpoint pollution of surface waters

Laws reducing point source pollution

CASE STUDY US experience reducing point source pollution

Successes of the Clean Water Act of 1972

Challenges/needs to update the Act

Sewage treatment reduces water pollution by?

What is a septic tank?

What is primary sewage treatment?

What is secondary sewage treatment?

What is advanced or tertiary sewage treatment?

Health benefits of treating waste?

Composting toilets?

Science Focus-treating sewage with nature?

Sustainable ways to reduce and prevent pollution- figures 20-20 and 20-21

Core case study revisit population - control and prevention vs clean up

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