robertgaston robertgaston
  • 10-05-2017
  • Biology
contestada


5)
Scientists believe that the Earth's early atmosphere lacked __________ gas because photosynthetic organisms did not yet exist.

Respuesta :

iamarmando
iamarmando iamarmando
  • 10-05-2017
it's either hydrogen or nitrogen
Answer Link

Otras preguntas

Please solve equation -3x2+243=0
the resistance of a wire of length 80cm and of uniform area of cross-section 0.025cmsq., is found to be 1.50 ohm. Calculate specific resistance of wire in SI un
Please solve equation -3x2+243=0
can anyone tell me to solve this..
Which will cause a decrease in gas pressure in a closed containerA) Reducing the volumeB) Adding more gas C) Lowering the temperature
what happens when limestone is heated
can anyone tell me to solve this..
How did the Tang people gain the Mandate of Heaven?
Match the function with its value f(x)= x2-3x+3 g(x)= 2x2-1 f(z^2)= .....
find out volume of the solid obtained by rotating the region bounded by the given curves about the specified line. y=lnx, y=1, y=3,x=0; about the y-axis.