by Frank Covert Jean, Ezra Clarence Harrah and Fred Louis Herman Jean, Frank Covert 1880- creator Harrah, Ezra Clarence 1889- joint author. Herman, Fred Louis 1894- joint author. Powers, Samuel Ralph 1887-1970 ed. text xx Boston New York [etc.] Ginn and company [c1944] 1944 monographic eng

print

viii, 630, [1] p. illus., diagrs. 23 cm. Life became associated with protoplasm, which requires a constant supply of food // Living organisms must provide for the perpetuation of their own kind // Living things must adjust themselves to their environments // Science has made great discoveries relative to the nature and control of disease // Synthesis and decomposition form a cyle in nature // The adaptations of plants and animals have been seriously disturbed by man // Living organisms have evolved in response to changing environment // Mendel discovered genetic principles which make possible the improvement of all living species // Man's cultural development moved slowly at the outset but has been greatly accelerated by science and invention // Glossary // Index // with the editorial collaboration of Samuel Ralph Powers... Revised edition of v. 2 of the authors' An introductory course in science for colleges, published under the title: Man and the nature of his biological world, 1934. "References" at end of each chapter. Biology QH308 .J4 1944 571 JEA 44006583 DLC 750805 20190927124552.0 9737370