Mario gave his friend Eric money for lunch last week. Eric feels that he owes Mario a favor. This is an example of of social expectations. A. reciprocity norm
B. social-responsibility norm
C. social exchange theory
D. economic altruism

answer: with frogs you start with the skin ,peel the skin back to explore the muscle sytem ,peel back the muscle to explore the intestinal and endocrine system and follow ump by examining the eyes brain and skeletal strcuture

explanation:

whats up fam! \(-u-)/