1. Resources & Living things
Chapter 3

2. Benefits of trees Remove pollutants Remove carbon dioxide
Keep the air cooler (transpiration)
The economy
(Remember the shopping mall example).
Fine particulates: a complex mixture of extremely small particles and liquid droplets. Particle pollution is made up of a number of components, including acids (such as nitrates and sulfates), organic chemicals, metals, and soil or dust particles.

3. Environmental issues pollution Resource use Population growth
Point source
Non-point source
Video
Examples of natural resources include water, sunlight, trees, coal, oil

4. Environmental decisions
Lawmakers
Environmental Scientists
Costs and Benefits
Often influenced by lobbyists
For example: The proposed Keystone Pipeline:
Will this decision provide jobs?
Will it cost too much money?
Will it harm the ecosystem?
What are the chances of an oil spill?
Lawmakers are often influenced by lobbyists. Lobbying is act of attempting to influence decisions made by officials in a government, most often legislators or members of regulatory agencies.

5. resources
Renewable
Renewable IF…
Nonrenewable

6. Using a resource so that it will last for a period of time.
Sustainable Use
Ecological footprint
Conservation
Using a resource so that it will last for a period of time.
Is the level of resource use
Measured in global hectares:
How much life can be supported within a certain area?
Of an individual, of a country

7. Human population growth
Exponential growth

8. Forests and fisheries
Logging methods
Selective Cutting
Clear Cutting

9. The Forest stewardship council
An international organization dedicated to sustainable forest management

10. To assure a sustainable yield:
Fisheries
An area with a large population of valuable ocean organisms.
To assure a sustainable yield:
Fishing limits
Fishing methods
Aquaculture
Aquaculture: difficult to maintain; can cause pollution and spread disease into the wild fish population.
Outlawed:
Poisoning
dynamite
Artificial ponds or bays

11. biodiversity
The number of different species in an area.
Insects make up over
60% of species on earth.
Economic
Keystone Species
Clothing, medicine, and tourism in brazil, costa rica, and kenya Sea otters eat sea urchins. Without sea otters, sea urchans destroyed the kelp forests.
See text page 110.
Ecotourism
Food
Clothing
medicine

12. Factors that affect biodiversity
Genetics
The rainforest biome has fairly constant temperatures and lots of rainfall – a continuous growing season that supports more species..
Gene Pool: All the shared and differing genes among individuals in a species. (Example: A group of German Shepards will share some genes, but they are also variations in size, temperament, etc.)
Climate
Area

13. Damaging Protecting Humans and Biodiversity Habitat destruction
Habitat fragmentation
Poaching
Pollution
Exotic species