My cells have an organized nucleus. I am usually made of many cells but sometimes I can be single celled. I usually get my own food by decomposing other organisms. I can have one or two parents Who am I ?

The answer is fungi.

Explanation:

Fungi have an organized nucleus and are usually made up of more than one cell but fungus can be one cell as well, in which case it is called yeast. All fungi decompose organic material found in the environment to provide food for themselves.

I hope this answer helps.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.