945 resultados para Learning natural science
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Este libro cubre las expectativas de los alumnos que quieran aprobar la asignatura ciencias naturales de educación secundaria. Los temas del libro son: el universo (el sol y el sistema solar, planetas del sistema solar, las estrellas, las galaxias y el universo), el planeta tierra (como se mueve la tierra, la luna), un planeta lleno de vida (las células), las plantas (plantas con semillas, plantas sin semillas), los invertebrados( las lombrices, los moluscos), los vertebrados (peces, reptiles, pájaros y mamíferos), la historia de la vida en la tierra, la atmósfera (polución atmosférica), la hidrosfera (como el agua está distribuida en la tierra), minerales y rocas, las propiedades y los estados de la materia.
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There is evidence that in Europe and North America many species of pollinators are in decline, both in abundance and distribution. Although there is a long list of potential causes of this decline, there is concern that neonicotinoid insecticides, in particular through their use as seed treatments are, at least in part, responsible. This paper describes a project that set out to summarize the natural science evidence base relevant to neonicotinoid insecticides and insect pollinators in as policy-neutral terms as possible. A series of evidence statements are listed and categorized according to the nature of the underlying information. The evidence summary forms the appendix to this paper and an annotated bibliography is provided in the electronic supplementary material.
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v. 5 (1894)
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v. 15 (ser. 3, v. 6) (1896)
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Chapters I-VII reprinted from various journals ; chapters VIII and IX hitherto unpublished.
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Mode of access: Internet.
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Mode of access: Internet.
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Newspaper clipping inserted: A list of birds found in and around Chautauqua during the months of July and August, 1911.
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Mode of access: Internet.
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Includes bibliographies.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.