1why is the environment changing?
resource use and the production of the by product resource use
2human population is now what
8 billion
3by 2050 population will be what
9-10 billion
4how many people live on 1.9 us or less
735 million
5population growth rates in LCD have
deacresed significantly
6average number of children per women
5(1969) to 2.45
7LCD control how much of the world wealth
12%
8by 2050 how many people will live in cities
5 billion
9how have carbon dioxide rates changed
280 ppm to 415ppm 600ppm by 2050
10CFC emissions cause what
ozone holes
11when was CFC production banned
1994
12why is available crop land deacreasing
population growth and soil degredation
13how many people are chronically undernourished
800 million
14how many people die from undernurishment
40 million
15agriculture causes what
soil and water degredation
16how many fish species are fully or over exploited
75%
17aquaculture supply how much of world fish demand
50%
18how much will aquaculture supply by 2030
2/3
19how much has water consumption increased since 1900
600%
20LCD use how much water compared to Canada
1-2%
21how many people don't have safe drinking water
1.1 billion
22how many people die from polluted drinking water every year
15 million
23how much of the earths land is influenced by human activities
40%
24over the last century forest land cover has been reduced by
24%
25most of forest loss is caused by
agriculture conversion
26rate of extinction is how many times greater then the natural rate
1000 to 10000
27Paul Ehrlich suggested that
overpopulation would lead to environmental disaster
28Paul Ehrlich wrote
the population bomb
29impact
=population × affluence × technology
30sustained yield
highest rate as renewable resource consumption that can occur without deacreasing the potential for renewal
31perpetual resource
almost inexhaustible
32tool making revolution
200 00 years BP
33agriculture revolution
8000 BC
34industrial revolution
1700 AD
35information revolution
beginning in 1970's
36George Perkins Marsh wrote
Man and nature
37George Marsh influenced who ?
Theodore Roosevelt and Clifford Pinchot suggested forest should be saved to provide homes and jobs for future generations
38Moral and aesthetic preservation
John Muir (sierra club) oppose utilitarian policies believe nature deserves to exist for its own sake
39health and ecological damage concerns
industrial expansion after WW II added new concerns to the environmental agenda
40Rachel Carson wrote
silent spring
41Global environmental citizenship
environmental problems reported worldwide
42John Ealyn
earliest recorded concern for natural resource depletion
43National Audubon society
first conservation organisation established in 1905
44Sir Francis bacon
inductive logical thinking
45Karl Popper
deductive logic
46scientific understanding
explanation and confirmation
47idealization
empirical fact into a simple statement
48unification
relates apperently unconnected phenomena to some abstract ideal system or concepts