Passage Frog Story Part I (1-9): The author has a log cabin in the woods and a tree frog has taken up residence in it. Part I(10-16): The author found out that it is pollution and global climate change that bring disaster to animals and human beings Part I (17-18): The author calls on we human beings to take action and to protect the environment. anguage Points: 1. by hand; by a person, not a machine a. This toy was made by hand. b The letter was written by handPassage A Frog Story Part I (1-9): The author has a log cabin in the woods and a tree frog has taken up residence in it. Part II (10-16): The author found out that it is pollution and global climate change that bring disaster to animals and human beings. Part III (17-18): The author calls on we human beings to take action and to protect the environment. Language Points: 1. by hand: by a person, not a machine a. This toy was made by hand. b. The letter was written by hand