What is the primary function of decomposers within an ecosystem?

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

In what for do plants utilize nitrogen? why do they need nitrogen?