Explain why c02 levels in the atmosphere are lower in spring/summer than in fall/winter. show evidence

Among what trees do is take in CO2 and give out O2.

During spring/summer, there are more trees (living) than in fall/winter.

So, there is less CO2 in the atmosphere in spring/summer.

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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.