Our Impact on Land
Chapter 19
Population Impact on the Environment
Section 19.1
What is carrying capacity?
What is carrying capacity?
Maximum number of individuals of a particular species that the planet will support
What is population?
What is population?
Total number of individuals of a particular species in a particular area
Why is our population is increasing?
Why is our population is increasing?
Medicine
Sanitation
Nutrition
People reach the age to have children
How do people affect the environment?
How do people affect the environment?
47,000 kg of garbage
662,000 bathtubs of water
Five times the energy as the rest of the world
How do people affect the environment?
Electricity fuels mined burned
Water purify
Food land pesticides herbicides
Packaging paper plastic
Plastic oil
Paper trees transportation oil
Chapter 19 (cont.)
Using the Land
Section 19.1
How do we use land?
How do we use land?
Farming
Grazing Livestock
Cutting Trees
Landfills
How do we use land?
Hazardous Wastes
Structures
Mines
Natural Preserves
What are some environmental problems created because of land use?
What are some environmental problems created because of land use?
Farming fertilizer, herbicides, pesticides, erosion
Grazing Livestock less efficient
Cutting Trees loss of habitat, increase CO2,
Landfills -
What are some environmental problems created because of land use?
Hazardous Wastes landfill leak, running out of acceptable areas to build landfills, decompose slowly
Structures heat, run-off, evaporation, less ground water
Mines -
Natural Preserves not for human use
What can you do to protect the environment?
What can you do to protect the environment?
Reduce
Reuse
recycle
Should recycling be required?
Section 19.3
What are the advantages of recycling?
What are the advantages of recycling?
Land fill space
Trees
Water
Air pollution
Money
More efficient
One aluminum can = 3 hours of TV
List Advantages of mandatory Recycling.
List Advantages of mandatory Recycling.
More recycling
Recycle pay less for trash pickup
No trash pickup
Refunds
Save energy
Create jobs
List disadvantages of recycling.
List disadvantages of recycling.
Free choice voluntary recycle
Cost
Lost jobs
No market
Do you think recycling should be required by law?
