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Now, let us study how the plant obtains carbon dioxide. I... |
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taken up in the form of inorganic nitrates or nitrites. O... |
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Activity 5.3 ■ Take 1 mL starch solution (1%) in two test... |
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or sometimes even ventured out into the village; ventured... |
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have often heard adults complaining about ‘acidity’. Can ... |
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Q U E S T I O N S 1. What are the differences between aut... |
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process breaks up the three-carbon pyruvate molecule to g... |
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cells, or away from them and out into the air. The direct... |
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Figure 5.9 Human respiratory system Within the lungs, the... |
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? w ■ If the alveolar surface were spread out, it would c... |
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Our pump — the heart The heart is a muscular organ which ... |
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Blood pressure The force that blood exerts against the wa... |
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Figure 6.2 Reflex arc Can you now trace the sequence of e... |
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