What part of the brain or nervous system it affects dementia ?

Dementia is not a disease but it is simply the affect of strokes, Alzheimer, and brain damage. To be specific, it affects the memories, and the ability to function well in everyday life.

As you get older, it is even more likely to get this.

it mainly affects the back region of the brain and the front. where your motor skills are vulnerable.   

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.