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In addition to the local control of blood flow, global control of blood flow including changes in cardiac output and control of arterial BP is mediated by the autonomic nervous system. Global neural control of arterial hypertension is essentially through the sympathetic nervous system (SNS).
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Plants have a <u>cell wall</u> which gives the plant structure. The cell wall is made of cellulose.
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food chain- description 3
energy losses- description 5
pyramid of biomass- description 1
pyramid of numbers- description 4
energy flow- description 2
Midnight Sun, a name given the sun when it can be seen at midnight during the Arctic or Antarctic summer.The midnight sun occurs because the earth's axis tilts toward the sun in summer and away from the sun in winter. Thus the poles are exposed to the sun's rays for six months each. As our planet makes its annual circuit around the sun, parts of the globe experience dramatic seasonal swings thanks to the tilt of Earth’s axis. Between April and September, the northern hemisphere is tipped toward the sun, resulting in longer days and warmer weather. Destinations near and north of the Arctic Circle experience the astronomical phenomenon.
