Oxygen is the primary chemical in the decomposition of organic organisms
Answer:
A healthy ecosystem consists of native plant and animal populations interacting in balance with each other and nonliving things (for example, water and rocks). ... Decomposers break down dead plants and animals, returning vital nutrients to the soil. Plants take up these nutrients, along with water, through their roots.
Explanation:
If I am not mistaken, the answer is branch. For example a branch of the military is the U.S Navy.
Stratovolcanoes seems to fit, but I do not know what the list of answer choices is. Hope this if helpful :)
