Hi, can someone me with 3  questions?

For the first question, the detail is that "The narrator takes part in two important initiatives to help protect the sea turtles."

For the second question, "It was not only the tourists on the beaches that were threatening the survival of the sea turtles."

For the third question, there are two ideas: first is "It sets the stage for the narrator to explain how one day can impact a lifetime." Second is "It signals that the narrator intends to describe a meaningful experience."