Answer: Level of organization from electron to an organism is shown in the figure, have a look on it will help you a lot.
The answer is B: P
in which the P stands for Parent generation
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When alzheimer disease sets in early and impacts those under age 60, the final phase of the disease or death typically occurs around 3 to 5 years after the first signs of the disease appear. Alzheimer's disease is the most common type of dementia, which is represents the memory loss and other cognitive abilities serious enough to interfere with normal life. Alzheimer accounts for about 60 to 80 percent of dementia cases.
The correct answer should be
<span>D. Autonomic nervous system
It is called autonomic because it works on its own and it regulates organs functioning which is a thing that happens involuntarily. It regulates heart beats for example and it's not something that you do voluntarily since the heart beats regardless of you. It also controls things like vomiting or sneezing that you can't choose not to do when it starts happening.</span>
Science because there is a reason behind everything