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: Cells cannot survive without oxygen. 
Fact 2: Life is responsible for oxygen in the atmosphere.
answer:
cells cannot survive without the atmosphere.


question:
Fact 1: a radio converts electrical energy into vibrations. 
Fact 2: Electrical energy refers to energy associated with the flow of electrons.
answer:
a radio converts the flow of electrons into vibrations.


question:
Fact 1: Most organisms consume--and are consumed by--more than one species. 
Fact 2: All of the animal species on earth are consumers, depending upon producer organisms for their food.
answer:

All organisms are depending on multiple producers for their food.