Geography, 11.02.2021 01:00 rosieposie27
Earlier in history, the earth's atmosphere was most likely not friendly to organisms that needed oxygen to breathe. Today, however, the earth's atmosphere contains the oxygen needed for eukaryotic organisms. The oxygen was produced by cyanobacteria through the process of .
volcanism
photosynthesis
metabolism
respiration
Answers: 2
Other questions on the subject: Geography
Geography, 23.06.2019 13:10, lilsneak13
Which question did the author of how to grow a school garden consider about the audience before writing the project plan
Answers: 2
Geography, 24.06.2019 18:30, selemontaddesep6bv1p
Regions are always defined by a. climate b. many different factors c. mountain ranges d. continents & bodies of water
Answers: 1
Geography, 24.06.2019 21:00, abalth8463
Although romania possesses broad plains with fertile soils, its people a) work in citiesb) are impoverishedc) have emigrated to other nationsd) are entrepreneurs
Answers: 1
You know the right answer?
Earlier in history, the earth's atmosphere was most likely not friendly to organisms that needed oxy...
Questions in other subjects:
Mathematics, 12.03.2021 01:30
Mathematics, 12.03.2021 01:30
Mathematics, 12.03.2021 01:30
Mathematics, 12.03.2021 01:30
History, 12.03.2021 01:30
Biology, 12.03.2021 01:30
Mathematics, 12.03.2021 01:30
