Read this partial summary of Passage 1. It has been known since ancient times that people behave oddly when the moon is full. The moon's gravity may be the cause. Which sentence could be added to complete the summary?

Which statements are accurate about snow flakes

What is a small water source like a stream or brook?

Mexico city is an example of how humans alter their environment because it was a. one of the world’s largest cities b. built on drained and filled lake beds c. built after conquest by the spanish d. once the capital of the aztec empire