Answer:
Erythrocytes, or red blood cells, are by far the predominant cell type in the blood smear. They appear as biconcave discs of uniform shape and size (7.2 microns) that lack organelles and granules. Red blood cells have a characteristic pink appearance due to their high content of haemoglobin.
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Answer:
the hypothesis that evolutionary development is marked by isolated episodes of rapid speciation between long periods of little or no change.
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Answer:
Once common throughout Africa and Asia, elephant numbers fell dramatically in the 19th and 20th centuries, largely due to the ivory trade and habitat loss.
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