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An atom of nitrogen had seven protons in its nucleus. how many electrons does it have
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Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation
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With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite
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The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes
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How would you conduct your investigation? in your answer, explain your independent and dependent va...
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