Can I get help on this science question

An economic term that describes happiness and its hard to measure in numbers is

Jonathan purchases a comic book over the phone. the store does not promise a particular time in which the comic book will be shipped to jonathan. after 40 days, the comic book has not been shipped. do state or federal laws protect jonathan's rights in this case? what is the name of the law? select the best answer from the choices provided. a. federal law; the implied warranty of merchantability b. state law; the implied warranty of merchantability c. federal law; the mail and telephone order rule d. state law; the mail and telephone order rule

The people of mozambique and zimbabwe would be most likely to be affected by a change in flow of which of these rivers? a) congo b) niger c) nile d) zambezi