Aboratory exerdise 7.two 500-mb height paterms ohelights in m) for two days in december 1999. b) 314 figures 11.22(a-b) are the 500-mb height patterns from two days in december 1999. a) which pattern would support stronger high and low-pressure systems? explain your answer. (b) place l's and h's on each diagram where you would expect to find suface highs and lows. 306

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It's either  a. chiang kai-shek and the nationalists turned against the communists and killed hundreds of them. orb. hundreds of peasants were killed in shanghai during the period of warlord rule.  if we take into account that there was warlord rule at the time, i think that it's b (not entirely sure though)just my best thoughts.

Answer is b)eutrophication occurs when excess nutrients are present in aquatic ecosystems, resulting in the increased production of plant life and the subsequent decrease in the oxygen levels of the watereutrophication occurs when there are excess nutrients in a body of water. this results in plants having more food and reproducing  more, sometimes leading to more aquatic animal life as well. ultimately, this can reduce the oxygen level in the ecosystem.