Answer:
Iron oxides appeared after the emergence of cyanobacteria.
Explanation:
The composition of Earth's atmosphere in the first couple of billions of years of its existence was nothing like the atmosphere of today. This had a big influence on the processes that were taking place, or rather what processes and to what extent could have happened in those conditions. One big difference between the atmosphere then and after is the levels of oxygen.
Until the appearance of cyanobacteria, the oxygen levels in Earth's atmosphere were very low, and the same goes for the oceans. With a lack of oxygen, the process of oxidation was absent as well. The cyanobacteria though managed to produce oxygen, and this was on such a high scale that they changed the composition of Earth's atmosphere and the oceans. Not just that this enabled complex lifeforms to develop, but it also enabled the process of oxidation. Iron oxides for example occurred only after cyanobacteria appeared, and this can easily be seen when dating the oldest iron oxides and compare that age with the appearance of cyanobacteria.
About 500BCE, the Aryans began to
compose a body of texts called Vedas based on
their traditional stories. Veda is a Sanskrit
word that means knowledge. The Rig Veda is a
collection of more than 1000 poems that
survives to this day. The influence of these
stories of the Aryan people on the subcontinent
is why historians label the period of Indian
history lasting from about 1500BCE to 322BCE
as the Verdict Age. SORRY IT'S SO LONG
Explanation:
What is the meaning of mothee
Answer:
Global winds affect or influence climate moving warm air towards the poles.
Explanation:
Global winds are caused by pressure differences in the atmosphere from warm air rising to the poles.
Hope this answers the question.
