GEOG 205 Study Guide - Midterm Guide: North Atlantic Deep Water, Axial Tilt, Atmospheric Circulation
Document Summary
Thomas maltus populations grow exponentially but power to support them doesn"t. Positive checks: things that increase mortality rates (hunger, disease, war) Preventative checks: things that decrease fertility rates (abortion, birth control, celibacy) fertility rates: average number of children a woman is expected to have based on where they are in the world. Canada, us & china have low fertility rates due to immigration and the one child rule. Environmental challenges: biodiversity species declining, deforestation 80% original forests cleared/damaged/fragmented, water industrial wastes dumped into waters of developing countries, air pollution killing more & more people. Amount of people living in urban areas increasing. William cronon divide between urban dwellers & impacts of major environmental problems. James lovelock argued atmospheric composition can be used to test for presence of life by comparing gases with those based on biological activity. Daisy world hypothesis: under low temperatures, black daisies have advantage since absorb radiation; under high temperatures, white daisies have advantage since reflect radiation.
