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: Vesicle transport requires energy, so it is also a form of active transport. 
Fact 2: Much of protein transport in a cell occurs via coated transport vesicles.
Example Output: Much of protein transport in a cell requires energy.

Example Input: Fact 1: Insects can spread disease and destroy crops. 
Fact 2: Crops are affected by insect pests.
Example Output:
pests destroy crops.