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.

Ex Input:
Fact 1: Viruses cannot reproduce by themselves. 
Fact 2: Bats can also transmit rabies and rabies-like viruses.

Ex Output:
rabies cannot reproduce by itself.


Ex Input:
Fact 1: cutting down trees has a negative impact on an ecosystem. 
Fact 2: Ecosystems are living communities.

Ex Output:
Cutting down trees has a negative impact on living communities.


Ex Input:
Fact 1: Specialization occurs when competing species evolve different adaptations. 
Fact 2: Every animal has special characteristics and physical features that help it survive.

Ex Output:

competition helps species survive.