regan2121 regan2121
  • 07-11-2019
  • Biology
contestada

Which of the following gases were present in the atmosphere of 4 billion years ago?

A) water
B) methane
C) ammonia
D) all of the above

Respuesta :

their
their their
  • 07-11-2019

Answer: D) all of the above

Answer Link

Otras preguntas

Find AEB angle please friends ?
Can someone please help me with this
use your equation to determine how many weeks have passed when Johanna reaches what is $166 in her account
What is sqealer’s role in animal farm?
help me with this equation please
Which cost flow assumption assumes that the first units purchased are the first units sold? a. LIFO b. FIFO c. Specific identification d. Weighted average cost
40 tangs of a mixture of sand and gravel is 30% sand. how many tangs of sand must be added to produce a mixture which is 40% gravel​
Writers who want to establish a clear point of view in their personal narratives should: A. express their thoughts about the people and events in the story. B.
The house balanced. It was on the edge of a cliff. The house was old. It balanced unsteadily. Combined the sentences and don't add any new words
Today people use fossil fuels along with alternative energy sourcesThis is because as populations growthe higher demand for energy uses up resourcesReducing the