That would be Sternum as it is also called the "breastbone".
B. Decayed matter - earthworm-duck
Answer:
Not only is water necessary for the physical survival of humans, but many, if not most, human activities also make use of it. Agriculture is critically dependent upon continual supplies of freshwater. Human households also use freshwater daily for cleaning and laundry as well as for transporting sewage to waste treatment plants.
