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: completing a circuit causes electricity to flow through that circuit. 
Fact 2: Electricity can give the opener a shock.
Example Output: completing a circuit can give someone a shock.

Example Input: Fact 1: air pollution can cause the pH of soil to decrease. 
Fact 2: Acidity is measured with a pH meter or with pH paper strips.
Example Output: air pollution can cause the Acidity of soil to decrease.

Example Input: Fact 1: unequal heating of Earth 's surface by the Sun causes global wind patterns. 
Fact 2: Low latitudes, for instance, receive more heat during the day than stations at high latitudes.
Example Output:
Differences in solar warming with latitude during the day on the Earth's surface influence global wind patterns.