Answer: I believe the answer is the first one, rain forests, deforestation, water cycle.
Explanation: I think so because the words in that answer include the important keywords of the paragraph above.
Answer:
Maya astronomer-priests looked to the heavens for guidance. They used observatories, shadow-casting devices, and observations of the horizon to trace the complex motions of the sun, the stars and planets in order to observe, calculate and record this information in their chronicles, or "codices".
Explanation:
A. stop and check for cross traffic
