Aim: How have Human decisions affected habitats? Key Idea 7 Human decisions and activities have had a profound impact on the physical and living environment Text Chapter 6

Human Activities that have changed the biosphere include may have once caused often relies on the methods of the have resulted in which increased Food supply Pesticide use Monoculture use Hunting and gathering Agriculture Industrial growth Urban development Extinctions of animals Green revolution High standard of living Increased pollution Section 6-1 Concept Map Go to Section:

Milestones in Environmental Protection Preservation and conservation milestones in the United States by Holly Hartman

Fish-Eating Birds Magnification of DDT Concentration 10,000, ,000 10,000 1,000, Large Fish Small Fish Zooplankton Producers Water Section 6-3 Figure 6-16 Biological Magnification of DDT Go to Section: Biological Magnification

Habitat Destruction The magnificent white beluga whales of Alaska's Cook Inlet are headed toward extinction

Global Warming and Climate Change due to increased amounts of CO 2 in the atmosphere Smart Energy Solutions (buy energy star appliances) Use conservation initiatives (don’t waste water, electricity,etc.) Switch to compact fluorescent light bulbs (CFLs) Buy green power Buy cars that get more miles to the gallon or hybrids

Explosion at an oil rig in the Gulf of Mexico April 20, 2010 NASA image from SPACE NASA IMAGE FROM SPACE

The Earth Needs You