Scientists call the path that electricity takes an electric circuit. Electric circuits are used to carry electricity to places where we can use it. At home, at school, in factories or anywhere that relies on electricity. The electricity is carried to where it is needed by wires.
trait. A characteristic or condition that is determined by one's genes. The color of an animal's coat and the shape of a plant's leaves are physical traits.
A genetically determined characteristic or condition. Traits may be physical, such as hair color or leaf shape, or they may be behavioral, such as nesting in birds and burrowing in rodents. Traits typically result from the combined action of several genes, although some traits are expressed by a single gene. The difference between a behavior and a trait is simple: a behavior can be changed; a trait is essentially impossible to change.