Match the respiratory system structure with its description. 1. Visible structure on the face 2. Extends from the nares to the choanae 3. Common opening for digestive and respiratory systems 4. Located posterior to the choanae and superior to the soft palate 5. Extends from the soft palate to the epiglottis 6. Extends from the tip of the epiglottis to the esophagus 7. Passageway for air; extends from the base of the tongue to the trachea 8. Windpipe; membranous tube attached to the larynx 9. Large, conical-shaped organs of respiration 10. Small, air-filled chambers for where gas exchange takes place

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.