The system by which organisms get and give energy is

The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs.

it has 2 characteristics and they are conductivity and ductility

Explanation:

The conductivity makes them great conductors of electricity