A clause that can not stand alone is a dependent clause, also known as a subordinate clause. It is reliant on an independent clause.
Hope this helps, let me know if you need more help or further explanation! :)
Https://healthymeals.fns.usda.gov/hsmrs/HUSSC/ -- one of the highlighted links, although I'm not sure which one meets your particular needs
Tigers are becoming extinct, you could give information about poachers, their habitat and the life cycle of them. Most of the information can be found from endangered species websites or from general knowledge!
The major obsticle is how Lennie Small keeps getting into trouble with the police. The characters deal with it by running to a new ttown. This reveals that the character does not want to get into trouble and tends to run away from his problems. Example includes: "<span>We run. They was lookin' for us, but they didn't catch us.". Hope this helped!
Thanks!
~Steve</span>