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: touch can be used for detecting texture. 
Fact 2: The skin is richly supplied with nerves that enable the perception of pain, touch, heat, and cold.
Example Output: Nerves are used to feel texture.

Example Input: Fact 1: Energy is passed up a food chain or web from lower to higher trophic levels. 
Fact 2: Plants represent the first trophic level.
Example Output: Energy is passed up a food chain from plants.

Example Input: Fact 1: Mollusks live in most terrestrial, freshwater, and marine habitats. 
Fact 2: Though most trout are freshwater fish, some live in marine waters.
Example Output:
some mollusks live near trout.