Dermatology is the study and medical treatment of the skin. The root logy means the study of something. What does the root derm mean?

Plzz me between what two words does the ellipses appear in the following sentence? "the his breakfast." "the" and "cat" "cat" and "ate" "ate" and "his" "his" and "breakfast"

Plsss don’t worry about the green strip can someone plssssss

Precarious subsistence voracious abysmal wood is to fire as food is to arrowright grinning is to cheerful as teetering is to arrowright conniving is to scheming as terrible is to arrowright mournful is to sad as gluttonous is to arrowright