DO NOW

1. DO NOW What is the primary challenge in our increasingly populated world? What is one way we can enhance our quality of life while protecting and restoring the environment that supports us? What is sustainable development? What negative effects do population growth have on our environment?

2. Primary Challenge • Our primary challenge in our increasingly populated world is how to live within our planet’s means, such that the Earth and its resources can sustain us-and all life on Earth for the future .

3. Enhance quality of life • Renewable energy sources take the place of fossil fuels • Promote soil conservation, high efficiency irrigation , organic agriculture • Legislation and technology advances reduce the pollution emitted • Conservation biology help to protect habitats • Recycling • Take steps to reduce emissions of greenhouse gases

4. Sustainable Development • The use of resources in a manner that satisfies our current needs but does not compromise the future availability of resources. • “ meets the needs of the present without sacrificing the ability of future generations to meet their own needs. • Meet economic and social goals simultaneously • What is the triple bottom line?

5. Effects of Population Growth • Expanding and intensifying the production on food • Erosion, climate change, and poorly managed irrigation destroy 5-7 million ha of productive crop land each year. • Outdoor pollution, indoor pollution • Synthetic chemicals

6. SEEKING A SOLUTION • Many resources are renewable if we use them in moderation but can if we overexploit them. Order the following resources on a continuum of renewability, from most renewable to least renewable: soils, timber, fresh water, food crops, and biodiversity. For each resource, what might constitute over exploitation, and what might constitute sustainable use?

7. Homefun! • Chapter 2 Earth’s Physical Systems: Matter, Energy, and Geology • Read pages 25-29 “Matter, Chemistry, and the Environment” • Do Split page notes on the vocabulary