Ecology : our living planet / Paula Z. Hogan, Steven Seidenberg
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| Formato: | Libro |
| Lenguaje: | Spanish |
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Estados Unidos de América : Gareth Stevens Children´s Books
1989
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Tabla de Contenidos:
- Onlye one earth: the living planet, the web of life, pollution; planet earth: the earth´s crust, soil life, losing ground, saving the soil; the breathing planet: the air, the human cost, polluting the air, cleaning the air; a watery world: a blue planet, life in the sea, water pollution, keeping the waters clean; the dry lands: the deserts, types of deserts, marginal lands, upsetting the balance, stopping desert growth; the green blanket: the world´s forests, different forests, cutting down trees, saving the trees; wildlife: new species, widlife in danger, extinction, saving the future.