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.

Example Input: Fact 1: zinc has a positive impact on the healing of wounds. 
Fact 2: Sources of zinc are soil, zinc oxide, zinc sulfate, zinc chelate.
Example Output: soil can have a positive impact on the healing of wounds.

Example Input: Fact 1: Feathers help birds fly and provide insulation. 
Fact 2: Penguins rely on their feathers for insulation.
Example Output: penguins are kept warm with feathers.

Example Input: Fact 1: the Earth being tilted on its axis causes ones side of the Earth to receive less energy from the Sun than the other side. 
Fact 2: Energy produced by the sun in the form of heat and light is called solar energy.
Example Output:
the Earth being tilted on its axis causes ones side to receive less heat and light.