manyah7470 manyah7470
  • 04-03-2019
  • Biology
contestada

Before there was life on earth, which gas was absent from the ancient atmosphere?

A. ammonia
B.methane
C .nitrogen
D. Oxygen

Respuesta :

ash34321
ash34321 ash34321
  • 04-03-2019
D oxygen there was no free oxygen on the earth
Answer Link

Otras preguntas

What were 3 demands for the grange movement
n What was the purpose of the mounds built by the Mississippians? (Summarize)
Where did this movement begin and what made it different from the beliefs practiced during the Middle Ages?
50% of what number is 11.72
If Qr=58 and pq=13 find pr
What is the purpose of the making of Nintendo Switch?
Help ASAP Plzzzz i don't got a brain
What is a good way to establish the credibility of online sources? A. checking the site for links to other credible sources B. assess the presentation of the ma
Which factor contributed to the rise of the Akkadian Empire? The Akkadians invaded the Fertile Crescent. The Akkadians encouraged Israelites to rebel. The Akkad
At a carnival game, you randomly throw two darts at the board and break two balloons. What is the probability that both the balloons you break are purple? Write