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B. Color is the best way to identify a mineral.
Mineral can be defined as an inorganic substance obtained from the rocks or other geological deposits. A mineral can be differenciated from other minerals by examining the physical and chemical properties. Physical properties includes the color, luster, texture and other. Chemical properties includes the composition of the minerals.
Color is best way to identify a mineral in rose quartz and smoky quartz. The rose quart is pink in color whereas the smoky quartz is gray in color. The color should not only identified by examining the mineral superficially but the streaking of the mineral should be performed to determine the actual color from the sediment.
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The p wave on an electrocardiogram (ecg) represents the depolarization of cells in the sinoatrial (SA) node.
<h3>What is sinoatrial node?</h3>
The sinoatrial node is close to the opening of the superior vena cava. This bundle of nerve tissue propagates electrical impulses and therefore governs sinus rhythm from minute to minute.
Electrocardiogram is a test, it is possible to detect the rhythm of the heart and the number of beats per minute.
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