Even though nitrogen constitutes 78% of Earth's atmosphere, the amount available for living things nearly all comes from nitrogen-containing fertilizers. a few groups of nitrogen-fixing bacteria. the breakdown of dead plants. the breakdown of minerals. a few genera of detritivores.
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In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?
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In the presence of oxygen, glycolysis is followed a. the krebs cycle b. lactic acid fermentation c. alcoholic fermentation d. photosynthesis
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Are the layers of rock above and below the coal older or younger?
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Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?
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Even though nitrogen constitutes 78% of Earth's atmosphere, the amount available for living things n...
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