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: Producers are organisms that produce food for themselves and other organisms. 
Fact 2: Autotrophs are organisms that can make their own food.
Example Output: An autotroph is a producer that can produce food for itself.

Example Input: Fact 1: pollutants have a negative impact on the environment. 
Fact 2: Incineration is harmful to the environment, it pollutes.
Example Output: inceneration is harmful to the environment.

Example Input: Fact 1: Most species go through larval stages after hatching. 
Fact 2: Brood are the larval and pupal stages of the ant.
Example Output:
An ant has a brood which is the larval and pupal process of the ant after hatching.