Studies the interrelationships between organisms and their environments

Ecology is the study of interrelationship between living organisms and the environment.

Explanation:

Ecology is the study of interactions among organisms and their environment. The organisms interact with each other with their surroundings.

It is a place such as a rotting log , forest where the interactions between living and non-living things occur.

The branch of sociology that deals with studying the relationships between human and their physical and social  environments is called as human ecology. The study of detrimental effects of modern civilization on the environment towards the prevention or reversal through conservation is called human ecology.

The Ecosystem processes primary production, pedogenesis, nutrient cycling, and various construction activities regulate the flow of energy through the environment.

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.    

protist eukaryotes that are not plants, animals, or fungi ("misfits")