Cells are what make up organisms. Cells make tissues, tissues make organs, organs make systems, and organ systems make organisms.
Hello! The largest mass extinction in Earth's history occurred about 250 million years ago, right before the dinosaurs appeared. Devonian Period ended about 355 million years ago, which was before the mass extinction occurred. Therefore, C is eliminated. The Cambrian Period came before Devonian Period, ending around 485 million years ago, which also eliminates A. Ordovician Period ended about 445 million years ago, which also before the mass extinction. B is gone, which leaves us to the last available answer choice being D. The Permian Period ended around 250 million years ago, which was the time of the mass extinction. The largest mass extinction even occurred at the end of the Permian period. The answer is D: Permian.
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Describe a test you could use to identify the gas produced when yeast respires anaerobically? Hydrogencarbonate indicator is used to test for carbon dioxide gas produced during respiration. An alternative method is to bubble the gas through limewater and see if it turns milky.
