Biology, 29.10.2020 03:00, lildeb2778

25 POINTS HELP ... Select the correct answer from each drop-down menu. Complete the sentences to explain how photosynthetic organisms changed our lives on Earth.
The 1(carbon dioxide) 2(oxygen) 3(water vapor) 4(nitrogen) in the atmosphere that all living beings depend on was generated by cyanobacteria during the Archaean and Proterozoic eras. The presence of this substance is what makes 1(the water cycle) 2(visability) 3(photosynthesis) 4(combustion) possible on Earth.

25 POINTS HELP

... Select the correct answer from each drop-down menu. Complete the sentences to

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25 POINTS HELP ... Select the correct answer from each drop-down menu. Complete the sentences to ex...