Rock layers form when settlements build up over time they usually have to go through pressure and compaction/cementation before this happens
Answer:
Prediction.
Explanation:
A prediction is often written as an if/then statement.
This ultimately implies that, a prediction is based on hypothesis that hasn't proven yet or isn't backed up by any evidence. Thus, it is typically an if statement that also leads to an outcome (then).
Climate and soil quality varied throughout the land area surrounding the city
