In stressful situations, the sympathetic nervous system the arteries of the circulatory system and the pupils of the eyes. question 6 options:

The correct terms to fill in the blanks would be contracts and dilates. In stressful situations, the sympathetic nervous system contracts the arteries of the circulatory system resulting to the dilation of the pupils of the eyes. Also, during these situations, the blood sugar levels are raised since the hormones for stress kick in to combat the stress which in turn raises the blood sugar. 

A- a reduction in biodiversity