Instructions: Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.
Input: Paragraph- Sent 1: Renewable resources can be renewed as they are used.
Sent 2: An example is timber, which comes from trees.
Sent 3: New trees can be planted to replace those that are cut down.
Sent 4: Sunlight is a renewable resource.
Sent 5: It seems we will never run out of that!
Sent 6: Just because a resource is renewable, it doesnt mean we should use it carelessly.
Sent 7: If we  aren't careful, we can pollute resources.
Sent 8: Then they may no longer be fit for use.
Sent 9: Water is one example.
Sent 10: If we pollute a water source it may not be usable for drinking, bathing, or any other type of use.
Sent 11: We can also overuse resources that should be renewable.
Sent 12: In this case, the resources may not be able to recover.
Sent 13: For example, fish are renewable resources.
Sent 14: Thats because they can reproduce and make more fish.
Sent 15: But water pollution and overfishing can cause them to die out if their population becomes too low.
Sent 16: Figure 2.16 shows another example. 
Question: What is an example of a renewable resource that can be polluted?.
Output:
Water.