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: Nonmetal elements are far fewer in number. 
Fact 2: Most of the elements on the periodic table are nonmetals.
[A]: Most of the elements on the periodic table are far fewer.


[Q]: Fact 1: Macroevolution is evolution over geologic time above the level of the species. 
Fact 2: Besides the above-named species, various other species of the genus have been used medicinally.
[A]: Macroevolution is evolution over geologic time at the genus level and above.


[Q]: Fact 1: air pollution can cause the pH of soil to decrease. 
Fact 2: Research has shown that soil pH less than 6.0 can decrease crop yields.
[A]:
Air pollution can cause a decrease in crop yields.