Answer: Reciprocity
Explanation:
Because of his help, which is not a small one since he has carried heavy things upstairs, he is hoping that reciprocity will make you willing to help him too.
This is referring to an obligation in returning the favor because he was doing that favor to you at first.
Then, both of you will have done a benefit that is good for both and this is considering a good action. He knows that you should be willing to do that more than anyone else because he has done favor to you.
oxygen has ozone and carbon dioxide in it
Isaac is most like using a. performance-enhancing drug to improve his abilities
Stress or Depression. Misdiagnose. The self report study is a type of survey, in which respondents read the question and select a response by themselves without researcher interference. In this method, it involves asking a participant about their feelings, attitudes, beliefs and so on. It also has validity problems.
