The last time carbon dioxide (CO2) levels were as high as today was over 3 million years ago during the Pliocene epoch. At that time, global temperatures were 2















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When you look at objects under high magnification what happens to the brightness?















































Asked by Anonymous































































When observing objects under high magnification, mawartoto the brightness of the image may decrease due to the limited amount of light entering the microscope objective.















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What species do modern human beings fall into?















































Asked by Anonymous































































Modern human beings belong to the species Homo sapiens.