the knight, the squire, and the yeoman
The dependent clause always has a subject and a verb. However, the clause can't stand by itself because its not a complete thought.
Conjunctions can be remembered as FANBOYS- For, And, Nor, But, Or, Yet, So. They always connect two independent clauses and all have less than 4 letters.
The main idea of the paragraph would be the penguins camouflage and feathers help them in their survival
3 supporting facts would be: it makes them hard to see in the ocean for predators, they blend with they sky, their feathers protects them while swimming and keeps them warm.
(this could be worded better but yeah, hope I could help!)