The answer to this questions is letterB
Answer:
The release of methane from thawed permafrost.
Explanation:
The complete question is
A group of scientists in Alaska notices that not only have atmospheric CO2 levels increased at their sampling site but so too have methane levels. What could account for this increase in methane levels?
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None of the answer options is correct.
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The release of methane from thawed permafrost.
-A decrease in beef production near the researchers' sampling area.
-The melting of permafrost accompanied by the thawing of methane-producing bacteria.
-The failure of rice paddies to be established in Alaska, given its climate.
Permafrost regions like the arctic circle hold a large supply supply of methane in their soils and their seas. Ordinarily, this methane should be gradually released naturally over a long period of time, but the effects of global warming is making these permafrost to thaw at a much faster rate, accelerating the release of methane into the atmosphere. The dark side is that methane is about 80 times more deadly when compared to CO2 in its contribution to the green house effect on earth.
Every organic molecules/compound contains carbon (c).
Some other very abundant are hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
I learned this with the acronym CHNOPS.
C - Carbon
H - Hydrogen
N - Nitrogen
O - Oxygen
P - Phosphorus
S - Sulfur
Hope this helps!
Answer:
The pH of pure water at this temperature is 6.88.
Explanation:
Ionization constant of water = 
Water will dissociate into equal amount of hydronium and hydroxide ions
![[H_3O^+] = [OH^-]= x](https://tex.z-dn.net/?f=%5BH_3O%5E%2B%5D%20%3D%20%5BOH%5E-%5D%3D%20x)
![K_w=[H_3O^+]\times [OH^-]](https://tex.z-dn.net/?f=K_w%3D%5BH_3O%5E%2B%5D%5Ctimes%20%5BOH%5E-%5D)
![K_w=1.7 x 10^{-14}=[H_3O^+]\times [OH^-]](https://tex.z-dn.net/?f=K_w%3D1.7%20x%2010%5E%7B-14%7D%3D%5BH_3O%5E%2B%5D%5Ctimes%20%5BOH%5E-%5D)
The pH of the solution is a negative logarithm of hydronium ions concentration.
The pH of pure water at this temperature:
![pH=-\log [H_3O^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH_3O%5E%2B%5D)
The answer might be carbon dioxide
