racysophil6leSpo racysophil6leSpo
  • 01-11-2016
  • Biology
contestada

The atmosphere of early earth probably contained no o2 until the emergence of organisms that _____.

Respuesta :

antonsandiego
antonsandiego antonsandiego
  • 02-11-2016
I am pretty sure that the atmosphere of early earth probably contained no o2 until the emergence of organisms that used water as an electron source for photosynthesis. If there were options to choose, I hope you have the same in your list, but I assume information I gave you is correct.
Answer Link

Otras preguntas

plz help and explain :)))))
Which one of the following provisions was part of the first draft of the Articles of Confederation submitted to the Second Continental Congress? A. No
What is evolution that occurs as a result of chance events?
According to records from 50 years, there is a 2/3 chance of June temperatures being above 80 F. Azul needs to find the probability that it will be above 80 F f
Can someone help with section 2, please?
What’s a cell membrane?
The manager of the bank where you work tells you that your bank has $10 million in excess reserves. she also tells you that the bank has $400 million in deposit
Page Debra made $ 80 for 5 hours of work. At the same rate, how much would she make for 17 hours of work?
under the articles of confederation Congress was unable to pass laws without two thirds vote from the state
The physical property that relates the mass and volume of an object or material is ?