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Most scientific questions are based on opinions. hypotheses. observations. experimental data.
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Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the
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Modern whales developed their traits through natural selection what occurs during the process of natural selection
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As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes
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Which of the following would decrease stroke volume? Which of the following would decrease stroke vo...
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