Cyanobacteria don't need oxygen to survive they produce oxygen. They where the first ever known organisms on the planet and they produced oxygen in the oceans which was absorbed by iron deposits and then once the iron had oxygen the ocean got the oxygen until it got into the atmosphere and Eukaryota bacteria evolved. So the answer would be: <span>They convert nitrates from the water into nitrogen gas (N2) that is released into the atmosphere.</span>
Answer:
The Neolithic Revolution, or (First) Agricultural Revolution, was the wide-scale transition of many human cultures during the Neolithic period from a lifestyle of hunting and gathering to one of agriculture and settlement, making an increasingly larger population possible.
Explanation:
The three major rocks are igneous, sedimentary, and metamorphic
the two types of igneous rocks are diorite and gabbro
? there is no video. Please be more specific
I suggest taking this post down before a moderator does.
They are pretty strict. :)
