Life

• There is currently no consensus regarding the definition of life.
• One popular definition is that organisms are open systems that maintain homeostasis, are composed of cells, have a life cycle, undergo metabolism, can grow, adapt to their environment, respond to stimuli, reproduce and evolve.

The seven characteristics of life include:

• responsiveness to the environment;
• growth and change;
• ability to reproduce;
• have a metabolism and breathe;
• maintain homeostasis;
• being made of cells; and.
• passing traits onto offspring.

Society in the ancient past

• The term civilization basically means the level of development at which people live together peacefully in communities. 
• Ancient civilization refers specifically to the first settled and stable communities that became the basis for later states, nations, and empires.
• Although Mesopotamia civilization is considered the oldest in the world's history, some researchers believe that the Aboriginal Australian is the oldest.