What is this concept of shared work among specific cells called?

The correct answer is: tissue.

Explanation:

Humans are made of organ systems, organ systems are made of organs, and organs are made of tissues. These tissues are all composed of specific cells that work together in order to carry a particular task that is demanded by the body.

There are four basic types of tissue: epithelial tissue (found in the surface of the skin and in the inner lining of hollow organs), muscular tissue (has the ability to contract), nervous tissue (regulates and controls bodily functions), and connective tissue (connects all of the other organs).

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.