TASK DEFINITION: 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.
PROBLEM: Fact 1: Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. 
Fact 2: Alcohol includes ethanol and methanol.

SOLUTION: alcohol can make methanol.

PROBLEM: Fact 1: Fungi are the only organisms that can decompose wood. 
Fact 2: All wood is either pine or oak.

SOLUTION: fungi are the only organisms that can decompose pine trees.

PROBLEM: Fact 1: Cells secrete acids and bases to maintain the proper pH for enzymes to work. 
Fact 2: Most human enzymes work at a optimal pH of 7.4, but other enzymes work at many different pH ranges.

SOLUTION:
Cells secrete acids and bases to maintain most human enzymes.