Atoxic dumping site leaks into a local water supply and prompts a public outcry. the local and then the state government each take actions to clean up the site and to fine the company for damages. which of the following would be a potential positive externality for the national environment? . a. more funds for pro-business political candidates. b. increased funding for oceanic research efforts. c. renewed interest among students in the humanities. d. tighter federal oversight laws and restrictions

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.