Answer:
A.......
Explanation: The sun is the main source of energy
Answer:

Explanation:
Here, we want to calculate the number of moles of methane in the container
From the ideal gas law:

where:
P is the pressure inside the container which is 3 atm
V is the volume of the container which is 2 L
R is the molar gas constant which is 0.0821 Latm/mol.k
T is the temperature in Kelvin (we convert the temperature in Celsius by adding 273 : 273 + 77 = 350 K)
n is the number of moles that we want to calculate
Substituting the values, we have it that:
D
I don’t know how to explain it, but when there are 8 outermost outer nuclear electrons, it’s the most stable time, lose e- will make it unstable
Answer:
Hope this helps!! :D
Explanation:
Often, the rock layers bookending the mass extinction are noticeably different in their compositions. These changes in the rocks show the effects of environmental disturbances that triggered the mass extinction and sometimes hint at the catastrophic cause of the extinction.
No, they do not tell you what the product actually consists of.