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
In this context, advocacy can be defined as attempting to influence public policy through education, lobbying, or political pressure. Advocacy groups often attempt to educate the general public as well as public policy makers about the nature of problems, what legislation is needed to address problems, and the funding required to provide services or conduct research.