please explain these answers with examples and define your answers. explain each example and make sure every question is answered thoroughly

Question 02: Public Goods and Common Resources are difficult to fund and maintain through the private market so we tend to see the government stepping in to provide and maintain these goods. Provide an example of a public good and an example of a common resource. Explain why it is difficult to fund and maintain these two specific types of goods. What do the characteristics of excludability and rival in consumption mean