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: Chemical bonds form when substances react with one another. 
Fact 2: All substances are composed of molecules.

A: Chemical bonds form when molecules react with one another.
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Q: Fact 1: Biodiversity generally increases from the poles to the equator. 
Fact 2: Soil Biodiversity Soil biodiversity reflects the mix of living organisms in the soil.

A: the mix of living organisms generally increases from the poles to the equator.
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Q: Fact 1: Cells are the basic units of the structure and function of living things. 
Fact 2: Cells contain a macronucleus and micronucleus.

A:
A macronucleus and micronucleus are contained with the basic structural and functional unit of living things.
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