Download A Natural History of California (California Natural History by Allan A. Schoenherr PDF

By Allan A. Schoenherr

During this accomplished and abundantly illustrated publication, Allan Schoenherr describes a kingdom with a better diversity of landforms, a wider variety of habitats, and extra different types of crops and animals than any sector of similar dimension in all of North the United States. A traditional heritage of California will familiarize the reader with the weather, rocks, soil, vegetation and animals in each one unique zone of the country.

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2 Transfer of energy in ecosystems. (Animal illustrations by Ellen Blonder, from J. Verner and A. S. Boss. California Wildlife and Their Habitats: Western Sierra Nevada, Gen. Tech. Rep. PSW-37, Berkeley: Pacific Southwest Range Exp. , Forest Service, USDA, 1980. ) < previous page page_22 If you like this book, buy it! next page > < previous page page_23 next page > Page 23 Food Pyramids A food chain is the sequence by which energy is transferred from sunlight, to green plant, to herbivore, to carnivore.

35 g) of milk chocolate has enough energy in it to raise the temperature of 147 liters (more than 25 gallons) of water 1°C. The first law, loosely translated, states that the total amount of energy in the universe is constant, and we cannot add to it or take away from it. Perhaps even more loosely translated, the second law states that energy can be converted from one form to another, but transformations are never completely efficient. Disorder (entropy) tends to occur during energy transformations; therefore to create order or put things in a precise arrangement, requires more energy than can be reclaimed later.

The climate in this region between the tropics is therefore said to be tropical. The precise amount of cooling varies with the amount of water vapor in the air, but on the average it is about 3° to 5°F per 1000 feet (1°C/ 100 m). A drop in temperature of 20°F (11°C) will decrease the amount of water held by the air by one-half. When air descends to the earth, the procedure reverses. Descending air becomes compressed and heats at about the same rate as it cools when rising. This process causes the air to absorb water vapor.

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