Introduction to Alternative Energy Sources Fossil fuels represent about 90% of energy use today, the rest is "alternative energy" Alternative Energy
Renewable and nonrenewable energy resources that are alternativ
Oil Price Today
NEW YORK - Oil prices rose Tuesday to a alltime highs above $118 a barrel on concerns over supplies from some key producers.
Light, sweet crude for May delivery rose as high as $118.05 a barrel in electronic trading on the New York
chapters 16 and 17
Energy consumption for US from 1950-2000
US energy consumption by sector
Sources of Energy
non-renewable (fossil fuels) vs. renewable (solar,
biomass, wind) Traditional (fossil fuels, biomass) vs. alternative (wind, sol
increase supply in regions reduce demand
Increase Supply: Growing?
Increasing Yield per Acre
The Green Revolution
programs that have led to the development of new strains of crops with higher yields, better resistance to disease or be
Chapter 11 Producing Enough Food for the World: How Agriculture Depends on Environment
1-2 Billion people undernourished
Land where crops could potentially be grown (arable land) =10-12 million square miles
57 million square miles o
Chapter 9 Biological Productivity and Energy Flow
How much can we grow?
How many bushels of wheat can be produced in a year? What is maximum number of fishes that can be harvested from ocean? How much production from forests?
Chapter 8 Biogeography
The large scale geographic pattern in the distribution of species, and the causes and history of this distribution
Wallace's Realms: Biotic Provinces
Major biogeographic regions of Earth that are base
Biologists have named about 1.8 million species Estimates of total species range from 10 million to over 200 million
ecosystem / habitat species genetic
totality of genes, species, and ecosystems of a region