What was the first sign that the pilot was not feeling well?

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Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

Which process in respiration happens first? a)pyruvate processing b)electron transport chain c)krebs cycle d)glycolysis