How are soil horizons ordered from the top of the profile to the bottom?

a. A, C, B
c. C, B, A
b. A, B, C
d. B, A, C

i think its the first one

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.

huh

explanation:

not sure what it is