Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.
--------
Question: Fact: a plant stem is the vehicle for transporting water and food from roots to the rest of the plant

Answer: Which is likely to have a means to transport water from the dirt to the rest of its body?


Question: Fact: grey clouds appear before precipitation

Answer: In the intermediary before rain falls, observers may note?


Question: Fact: the Earth contains many ecosystems

Answer:
The planet that contains many ecosystems is sequentially _________ from the center of its solar system?