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.

[Q]: Fact 1: bacteria can cause people to become ill. 
Fact 2: Recovery from illness, especially infectious illnesses, or operations, is slow in some people.
[A]: bacteria can be infectious and cause people to need recovery.


[Q]: Fact 1: howling is used to warn other wolves by wolves. 
Fact 2: And somewhere a beagle howls a most pitiful sound.
[A]: wolves use sound to warn other wolves.


[Q]: Fact 1: cycles of freezing and thawing water cause ice wedging. 
Fact 2: An ordinary ice road is therefore severely damaged by cracks induced by the traffic.
[A]:
cycles of freezing and thawing water can cause severely damaged roads.