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: using renewable resources to generate power reduces greenhouse gases. 
Fact 2: Nuclear power generation plants emit no greenhouse gases.

Output: Nuclear power plants reduce greenhouse gases.


Input: Consider Input: Fact 1: sweat is used for adjusting to hot temperatures by some animals. 
Fact 2: Perspiration is produced by sweat glands in the skin and is secreted through pores.

Output: Perspiration is used for adjusting to hot temperatures by some animals.


Input: Consider Input: Fact 1: radioactive dating is used to determine the age of fossils. 
Fact 2: For sedimentary rock, fossils provide the relative age of deposition.


Output: radioactive dating is used to determine the relative age of deposition.