1. "The trees' leaves waved in the wind" This is personification, the translation would be that the leaves are simply swaying as the wind is moving across.
2. "The girl giggled evilly like hyenas stalking their prey" This is a simile, it uses "as" or "like".
3. "He was basically a roadrunner in the race!" Metaphor is like a simile, but it doesn't use "as" or "like".
China is the country that is responsible for the largest share of the US exports
Racism ruins relationships and wrecks reputations.
Conversation between characters in a story is called dialogue.