Combine the given two facts to write a concluding fact. Note that there should be some parts of the first and second facts that are not mentioned in this conclusion fact. Your combined fact should be the result of a chain between the two facts. Chains form when two facts connect together to produce a concluding fact. An example of a chain is: "pesticides cause pollution" (fact1) + "pollution can harm animals" (fact2) → "pesticides can harm animals" (conclusion fact). Parts of the concluding fact overlap with the first and the second fact. To construct such a  concluding fact, a useful way is to borrow the subject from one fact and the ending conclusions from another fact.

Example Input: Fact 1: Communities consist of populations of different species. 
Fact 2: Biodiversity is a lot more than just the number of different plant and animal species.
Example Output: Communities consist of populations that are biodiverse.

Example Input: Fact 1: water causes refraction of light. 
Fact 2: When light shines through a drop of water or prism, it bends or is refracted inside the droplet.
Example Output: Light is bent inside of water droplets.

Example Input: Fact 1: Amphibians are the first true tetrapods, or vertebrates with four limbs. 
Fact 2: Ancathostega is one of the earliest tetrapods found, and by far the most complete.
Example Output:
Ancathostegs have four limbs.