1. Coordinating
A coordinating conjunction joins two equal independent clauses. The independent clauses relate to each other but do not depend on each other. FANBOYS is an easy way to remember the coordinating conjunctions: For, And, Nor, But, Or, Yet, So.
2. subordinating conjunction
"in order that" is a subordinating conjunction. The subordinate conjunction joins a dependent clause and an independent clause.
3. With its rattle
With is a preposition. It tells where the rattlesnake is in relation to the rattle.