Chapter 1 Flashcards
World pop. Size in 2013
7.1 billion
What global trends represent interactions of humans with natural ecosystems?
Increasing pop. Growth and decline of human well being; decline of vital ecosystem services; negative impacts of global atmospheric changes; loss of biodiversity
Estimate pop. In 2200
10 billion
4 indicators of decline of vital ecosystems
Depleted water supplies; agricultural soils degraded; oceans over-fished; forests cut faster than they can grow
Two examples of ecosystem capital
Goods and services
Four ecosystem goods
Freshwater; all of our food; wood for lumber and paper; raw materials for fabrics
4 ecosystem services
Support human life and economic well-being; regulation of climate; erosion control; pest management
Ecosystem goods are free and sustainable. True or false
True
Steps can be taken to protect ecosystem capital. True or false
True
One example of an air pollution problem w/ global dimensions
Global warming
Carbon dioxide level in the atmosphere has grown from ___parts per million in 1900 to ____ in 2012
280;395