D. A consumer buys or trades to receive a commodity available for sale or exchange
Answer:
5. NREM
8. 9 to 9 1/2 hours
9. ninety minutes to two hours.
Explanation: Hopes this help
Alzheimer's disease is the most common cause of dementia.
The word dementia describes a set of symptoms that can include memory loss and difficulties with thinking, problem-solving and/or language. These symptoms occur when the brain is damaged by certain diseases, including Alzheimer's disease.