Background. 1  Composed of cells, tissues, organs, organ systems. 2  All cells use ATP for reactions. 3  Four primary types of tissue: epithelial, connective, muscle, and nervous.  Organs have at least two or more types of 1  tissue. Organ systems:
Advocacy Law and Legal Definition Advocacy is the act of pleading for or arguing in favor of something or actively supporting a cause or proposal. It can also refer to the work or profession of an advocate. For lawyers advocacy
With roots that run deep and strong within our heritage, grassroots advocacy is one of the most common forms of lobbying in our nation. Indeed, when the founding fathers wrote the Constitution they recognized that the right of citizens to petition our government was paramount to the success of our Democracy.