It’s B the other person put D but that’s the cell wall or cell membrane
HOPE THIS HELPS !
Answer: Carbon is one of the essential gases in nature,couple of natural processes causes the release of carbon. Some of the processes include;
- When the remains of producers are broken down by decomposers in the ecosystem.
- When animals break down food molecules to obtain energy, carbon is released.
- When the remains of consumers in the ecosystem are broken down by soil decomposers, carbon is released.
Think it's C since joints connects two bones together and marrow is inside bones.
