cause and effect 
this story is a resource for teachers to teach the skill cause and effect: "a cause is something that makes something else happen; an effect is what happens as a result of the cause" 

the idea that the mosquito is to blame for the unfortunate death of the owlet is an example of cause and effect. the operator at the station would display a yellow signal, which would cause the train to slow down so that they could receive the train order from a hoop from the operator. she played one of the group dancers in the movie. 