The answer is Every six months
A battery acts as the brain of a car and is used to power almost everything. It can last up to five years. However, this lifespan will depend on how well the battery is maintained and the type of weather conditions you live in. Aim to check your car battery at least twice a year. Actually, it is best to check your battery regularly and not to wait for your mechanic to test your battery during routine servicing.
Answer: Both have a center for knowledge; motherboard and brain. Both have a way of translating messages to an action. Both have a way of creating and sending messages to different parts of the system.
The answer is control windows
Answer: I think it’s D
Explanation: the rest apply to the the rules of 1NF and 2NF
