The liver makes sure that blood glucose levels remain steady. But when blood glucose levels fall, the pancreas secretes glucagon. Therefore the answer to your question in the pancreas.
It means that they are near sighted. I know this because I am also near sighted. Which makes it hard for me to read road signs from a far away distance sometimes. Hope this helps!!!
The answer to this question is life expectancy.
There are many ways to solve arachnophobia... I recommend giving some of those a try.