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: cooking food requires adding heat energy. 
Fact 2: Cooked foods are easier to digest.

SOLUTION: Heat energy makes digestion easier.

PROBLEM: Fact 1: adding salt to a liquid decreases the melting point of that liquid. 
Fact 2: Salt is sodium chloride or NaCl.

SOLUTION: adding sodium chloride to a liquid decreases the melting point of that liquid.

PROBLEM: Fact 1: if all members of a species cannot produce offspring then that species will likely become extinct. 
Fact 2: Avian species are less likely to become extinct if they are common across large ranges.

SOLUTION:
Avian species are less likely to end up extinct if they produce offspring.