Question

class 12 economic question chapter 2​

Answer 1

Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, called the intercellular matrix, fills the spaces between the cells. ... There are four main tissue types in the body: epithelial, connective, muscle, and nervous. Each is designed for specific functions.Other commonly agreed causes or triggers are past trauma or abuse; a genetic predisposition to depression, which may or may not be the same as a family history; life stresses, including financial problems or bereavement; chronic pain or illness; and taking drugs, including cannabis, ecstasy and heroin