When an economist or mathematician uses equations to calculate changing economic conditions, they use variables to simplify this process. What is a variable?

Reasons for factor mobility of a combine harvester, cotton, an oil platforn and a woodland

What are the unique drivers of behavior that are a result of language and culture?

Which two statements regarding graduated driver licensing are true? select all the correct answers. gdl new drivers gain skills under low-risk conditions. gdl new drivers gain skills under high-risk conditions. gdl laws are the same across states. gdl laws vary across states. gdl does not need parental supervision and coaching.