Cyanobacteria use water, carbon dioxide, and sunlight to create their food, and expel oxygen as a by-product. The real significance of stromatolites is that they are the earliest fossil evidence of life on Earth. ... They were the first known organisms to photosynthesis and produce free oxygen.
Be at least 18 years old at the time of filing Form N-400, Application for Naturalization.Be a permanent resident (have a “Green Card”) for at least 5 years.Show that you have lived for at least 3 months in the state or USCIS district where you apply.
<span>Aeschylus, sophocles, and euripedes are most famous for their
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