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.

Input: Consider Input: Fact 1: Constriction occurs when the muscular walls of blood vessels contract. 
Fact 2: Dehydration causes vessels to constrict and blood to thicken.

Output: Constriction causes blood to thicken.


Input: Consider Input: Fact 1: plant reproduction often requires pollen. 
Fact 2: Honeybees and other bees transfer the pollen.

Output: Plant reproduction often requires honeybees.


Input: Consider Input: Fact 1: bacteria can cause people to become ill. 
Fact 2: Common micro-organisms include fungi and bacteria.


Output: Common micro-organisms can cause people to become ill.