Cliffs can collapse because of the weather naturally eroding it. Also when water is constantly crashing against them, it can erode the layers of the cliff. It can also happen in a mud slide when the rain makes the soil extremely wet causing the rock to fall. Also in a rock slide when a piece of rock breaks off from the entire cliff.
The answer to your question is number 2 An exothermic process releases heat, causing the temperature of the immediate surroundings to rise
Answer: Adam Smith described the opposing, but complementary forces of self-interest and competition as the invisible hand. While producers and consumers are not acting with the intent of serving the needs of others or society, they do. Smith argued against mercantilism and was a major proponent of laissez-faire economic policies. In his first book, "The Theory of Moral Sentiments," Smith proposed the idea of an invisible hand—the tendency of free markets to regulate themselves by means of competition, supply and demand, and self-interest. 1
Explanation:
The open door policy was principles that was installed in 1899 and then the 1900s to Have a protection of equal or even trading among countries
