. A civic biology : presented in problems. Biology; Sanitation. ENVIRONMENT OF PLANTS AND ANIMALS 23 and other large animals go to sleep during the winter and awake thin and active at the approach of warm weather. Animals or plants used to certain temperatures are killed if removed from those temperatures. Even man, the most adaptable of all ani- mals, cannot stand great changes without discomfort and some- times death. He heats his houses in winter and cools them in summer so as to have the amount of heat most acceptable to him, about 70° Fahrenheit. The Environment determines the Kind o


. A civic biology : presented in problems. Biology; Sanitation. ENVIRONMENT OF PLANTS AND ANIMALS 23 and other large animals go to sleep during the winter and awake thin and active at the approach of warm weather. Animals or plants used to certain temperatures are killed if removed from those temperatures. Even man, the most adaptable of all ani- mals, cannot stand great changes without discomfort and some- times death. He heats his houses in winter and cools them in summer so as to have the amount of heat most acceptable to him, about 70° Fahrenheit. The Environment determines the Kind of Animals and Plants within It. - - In our study of geography we learned that certain. Vegetation in Northern Russia. The trees in this picture are nearly one hundred years old. They live under conditions of extreme cold most of the year. luxuriant growths of trees and climbing plants were characteristic of the tropics with its moist, warm climate. No one would expect to find living there the hardy stunted plants of the arctic region. Nor would we expect to find the same kinds of animal life in warm regions as in cold. The surroundings determine the kind of living- things there. Plants or animals Jilted to live in a given locality will probably be found there if they have had an opportunity to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hunter, George W. (George William), 1873-1948. New York : American Book Company


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