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.

Q: Fact 1: planting trees has a positive impact on an ecosystem. 
Fact 2: Biodiversity encourages a healthier ecosystem.

A: planting trees has a positive impact on biodiversity.
****
Q: Fact 1: Producers are organisms that produce food for themselves and other organisms. 
Fact 2: Autotrophs are organisms that can make their own food.

A: An autotroph is a producer that can produce food for itself.
****
Q: Fact 1: Playing is just one of many ways that mammals and other animals learn how to behave. 
Fact 2: After all, seals are mammals just as humans are mammals.

A:
Playing is just one of many ways that humans and other animals learn how to behave.
****