Lessons in Physical Geography
Lessons in Physical Geography
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In our eReader you can find the full English version of the book. Read Lessons in Physical Geography Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Lessons in Physical Geography
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Every blade of grass in the meadow and every tree in the forest is more or less interfered with by its neighbors and gets only such a share of light air, and water as it is able PLANT GEOGRAPHY 361 to seize in spite of them. Most plants multiply so rapidly that all their offspring could not possibly find room on the earth. A single tobacco plant produces 360,000 seeds in a year. If every seed produced a plant, in a few years the whole surface of the dry land would be covered with them.
Changes ...of Environment. — Not only does the natural spread of plants carry them into new conditions, but the conditions in any region or locality are subject to change.
Lakes and swamps dry up, are filled with sediment, or are drained. Areas usually dry are sometimes flooded. The growth of tall and rank vegetation cuts off the supply of light for the lower forms. The clearing of forests subjects the shade-loving plants which grew beneath them to new trials. Widespread changes of climate have sometimes involved a large part of a continent, as that from wet to dry in the Great Basin and from warm to cold during the glacial period in North America and Europe.
What to read after Lessons in Physical Geography?
You can find similar books in the "Read Also" column, or choose other free books by Charles Redway Dryer to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Every blade of grass in the meadow and every tree in the forest is more or less interfered with by its neighbors and gets only such a share of light air, and water as it is able PLANT GEOGRAPHY 361 to seize in spite of them. Most plants multiply so rapidly that all their offspring could not possibly find room on the earth. A single tobacco plant produces 360,000 seeds in a year. If every seed produced a plant, in a few years the whole surface of the dry land would be covered with them.
Changes ...of Environment. — Not only does the natural spread of plants carry them into new conditions, but the conditions in any region or locality are subject to change.
Lakes and swamps dry up, are filled with sediment, or are drained. Areas usually dry are sometimes flooded. The growth of tall and rank vegetation cuts off the supply of light for the lower forms. The clearing of forests subjects the shade-loving plants which grew beneath them to new trials. Widespread changes of climate have sometimes involved a large part of a continent, as that from wet to dry in the Great Basin and from warm to cold during the glacial period in North America and Europe.
What to read after Lessons in Physical Geography?
You can find similar books in the "Read Also" column, or choose other free books by Charles Redway Dryer to read onlineMoreLess
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