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: Plants that are adapted to very dry environments are called xerophytes. 
Fact 2: Bromeliads and cacti are xerophytes.
Example Output: Bromeliads and cacti have adapted to very dry environments.

Example Input: Fact 1: a laser is used for producing light. 
Fact 2: Light contains energy.
Example Output: A laser is used for producing energy.

Example Input: Fact 1: Plants respond to daily and seasonal cycles and to disease. 
Fact 2: Cactuses are one type of succulent plants, although they are usually referred to separately.
Example Output:
cactuses respond to daily and seasonal cycles and to disease.