Alzheimer's disease<span> is the most common cause of dementia. The word dementia describes a set of symptoms that can include memory loss and difficulties with thinking, </span>problem<span>-solving or language. These symptoms occur when the brain is damaged by certain </span>diseases<span>, including </span>Alzheimer's disease
Answer:
Actin filaments return to their original positions (does not occur in muscle contraction, according to the sliding filament model).
Explanation:
People can get chemical energy from food (carbohydrates)
