Answer:
Olivia is doing a plant cell
Explanation:
Olivia is making a plant cell, but she gave to model it for the science fair at her schoo. she using a cell membrane, cardboard, and a battery.
Arid is the correct answer
Answer: Salary
Explanation: The salary is the remuneration that a worker receives for the service he performs, the value of this salary is variable according to the contract signed between the employer and the employee.