The type of cell.... prokaryotic or eucaryotic cells!
The atoms should onky have same no. of protons+electrons.
A decomposer is an organism usually a bacteria or fungus that decomposes organic material.
Decomposers are considerd the last tropic level because they feed on everything.
Hope it helped!
8:C
9: A
10: B
11: C
12: B
13: A
14: B
15: A
