Molecular and Cell Biology For Dummies

Ever wondered how the food you eat becomes the energy your body needs to keep going? The theory of evolution says that humans and chimps descended from a common ancestor, but does it tell us how and why? We humans are insatiably curious creatures who can't help wondering how things work — starting with our own bodies. Wouldn't it be great to have a single source of quick answers to all our questions about how living things work? Now there is.

From molecules to animals, cells to ecosystems, Biology For Dummies, 2nd Edition answers all your questions about how living things work.

• Written in plain English and packed with dozens of illustrations, quick-reference
• Cheat Sheets, and helpful tables and diagrams, it cuts right to the chase with fast-paced, easy-to-absorb explanations of the life processes common to all organisms.
• More than 20% new and updated content, including a substantial overhaul to the organization of topics to make it a friendly classroom supplement
• Coverage of the most recent developments and discoveries in evolutionary, reproductive, and ecological biology
• Includes practical, up-to-date examples

Want to know more about genetics? This non-intimidating guide gets you up to speed on all the fundamentals and the most recent discoveries. Now with 25% new and revised material, Genetics For Dummies, 2nd Edition gives you clear and accessible coverage of this rapidly advancing field.

From dominant and recessive inherited traits to the DNA double-helix, you get clear explanations in easy-to-understand terms. Plus, you'll see how people are applying genetic science to fight disease, develop new products, solve crimes . . . and even clone cats.

• Covers topics in a straightforward and effective manner
• Includes coverage of stem cell research, molecular genetics, behavioral genetics, genetic engineering, and more
• Explores ethical issues as they pertain to the study of genetics

On the Origin of Species by Means of Natural Selection; Or, The Preservation ...

-Included TOC for Reader.

-Included biography the author.

This is example in ebook ;

Present distribution cannot be accounted for by differences in physical conditions. Importance of barriers. Affinity of the productions of the same continent. Centres of creation. Means of dispersal, by changes of climate and of the level of the land, and by occasional means. Dispersal during the Glacial period co-extensive with the world.

In considering the distribution of organic beings over the face of the globe, the first great fact which strikes us is, that neither the similarity nor the dissimilarity of the inhabitants of various regions can be accounted for by their climatal and other physical conditions. Of late, almost every author who has studied the subject has come to this conclusion. The case of America alone would almost suffice to prove its truth: for if we exclude the northern parts where the circumpolar land is almost continuous, all authors agree that one of the most fundamental divisions in geographical distribution is that between the New and Old Worlds; yet if we travel over the vast American continent, from the central parts of the United States to its extreme southern point, we meet with the most diversified conditions; the most humid districts, arid deserts, lofty mountains, grassy plains, forests, marshes, lakes, and great rivers, under almost every temperature. There is hardly a climate or condition in the Old World which cannot be paralleled in the New—at least as closely as the same species generally require; for it is a most rare case to find a group of organisms confined to any small spot, having conditions peculiar in only a slight degree; for instance, small areas in the Old World could be pointed out hotter than any in the New World, yet these are not inhabited by a peculiar fauna or flora. Notwithstanding this parallelism in the conditions of the Old and New Worlds, how widely different are their living productions!

In the southern hemisphere, if we compare large tracts of land in Australia, South Africa, and western South America, between latitudes 25 deg and 35 deg, we shall find parts extremely similar in all their conditions, yet it would not be possible to point out three faunas and floras more utterly dissimilar. Or again we may compare the productions of South America south of lat. 35 deg with those north of 25 deg, which consequently inhabit a considerably different climate, and they will be found incomparably more closely related to each other, than they are to the productions of Australia or Africa under nearly the same climate. Analogous facts could be given with respect to the inhabitants of the sea.