Decomposition breaks down organic material into simpler units and:
rids the world of scavengers
provides oxygen for photosynthesis
provides proteins for plants
rids the world of excess organic material

Option C, provides proteins for plants

Explanation:

Decomposing organism breaks down dead organic material into their base constituents such as nitrogen and carbon and releases them into the environment either in soil or atmospheric air. They decompose the proteins with in the decaying organism and releases energy. Plants absorb these nutrients form soil and use it in performing its cellular metabolic activities. In this way, decomposers not only fix the organic nutrients but also rid the environment from dead organic material.  

Hence, option C is correct

1: the largest region of the brain is the:

  cerebrum

2. the term "psychology" literally means:

the process or procedure of the science or study of the mind.

3. the area of the brain responsible for respiration, heart rate, and smooth muscle control of our blood vessels is t

medulla oblongata

4. the structure that conducts nerve impulses to and from the brain and serves as a reflex center for some sensory information without input from the brain is the:

spinal cord

5. the three-layered membrane that covers the brain and spinal cord and literally means membrane is called the:

meninges

6. the cord-like (string-like) structures that carry bio-electrical impulses from one part of the body to another are called

nerves

7. a group of nerve cell bodies that are found outside of the spinal cord and brain are referred to as:

ganglions or ganglia (pl.) “literal meaning knot”

8. the term that means spinal cord inflammation is:

myel/itis

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]