List five invertebrate groups in the animal family tree

1. emigration the movement of people from one place to another

2. immigration a situation in which resources are being used up at a faster rate than they can be replenished

3. migration the leaving of one's homeland to settle in a new place

4. overpopulation the movement of people to a new country

5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population

Explanation:

Those are the five invertebrate groups in the animal family tree

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.