A) cellular respiration, erosion, and combustion.

B) assimilation, photosynthesis, and respiration
C) decomposition, erosion, and assimilation
D) combustion, photosynthesis, and decomposition.

Hello! I'm debating between A and D, but I'm leaning a lot towards A
What do you think?

1 answer

What's the question?? !!

Since Jiskha doesn't have a biology expert at this time, please try posting your question at this site.

http://www.biology-online.org/biology-forum/

In addition, be sure to make really good use of Khan Academy!
http://www.khanacademy.org/science/biology
Choose from the general topics at the right and then find the specifics you need within each topic.