instruction:
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.
question:
Fact 1: Reproduction is the process by which organisms give rise to offspring. 
Fact 2: Sex equals reproduction.
answer:
sex is the process by which organisms give rise to offspring.


question:
Fact 1: threatening behavior causes a fight-or-flight response in animals. 
Fact 2: Any disaster that threatens humans, threatens animals as well.
answer:
fight-or-flight response happens in humans and animals.


question:
Fact 1: the sun causes water to evaporate more quickly by adding heat. 
Fact 2: During the summer the sun gets much higher and provides more direct, concentrated heating.
answer:

Water evaporates more quickly in the summer.