its a culture because different cultures have different languages
A complex sentence has one dependent clause and one independent clause.
Here's some examples;
1. After twenty years, he still had feelings for her.
2. Because my coffee was too cold, I heated it in the microwave.
It helps create suspense because a vulture is not a very likely used animal to portray something very pleasant such as a humming bird. A vulture is more looked upon as a threat or very creepy .