Please do not cut and paste from other answers.1. Why do salmon populations face the threat of extinction while goldfish populations are in no such danger?2. List the federal government’s three most important sources of tax revenue. How do these differ from your state government’s three most important sources of tax revenue? Why do you think that these different government entities use different tax bases?3. In Costa Rica, only a few beaches remain that are nesting grounds for sea turtles. Some of those beaches have communities situated near them; traditionally, the local people collected the turtle eggs and sold them for their purported aphrodisiac powers. As a result, sea turtle populations became endangered. To protect the sea turtle populations, the Costa Rican government gave each family in these villages ownership of a portion of the beach to do with as they please, including the harvesting and selling of sea turtle eggs. Sea turtle populations have started to increase. What is the economic rationale for this result?