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: if seeds stick to the fur of an animal then that seed will be transported by the animal. 
Fact 2: Along with the wind, birds are the primary transporters of berries and seed.

A: Birds can carry seeds in their feathers.
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Q: Fact 1: fluoride decreases tooth decay. 
Fact 2: Humans get most of their fluoride in drinking water.

A: Drinking water decreases tooth decay.
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Q: Fact 1: a battery converts chemical energy into electrical energy. 
Fact 2: If we disconnect the battery, the flow of electrons is no longer driven by the chemical forces in the battery.

A:
A battery produces a flow of electrons.
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