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: Most invertebrates have a more complex nervous system. 
Fact 2: Cephalopods have the most advanced nervous systems of all invertebrates.
answer:
Cephalopods have a complex nervous system.


question:
Fact 1: fossil fuels are formed from dead organisms over time. 
Fact 2: And that energy is generated by burning fossil fuel.
answer:
Burning dead organisms can create energy.


question:
Fact 1: if an object is made of a material then that object has the properties of that material. 
Fact 2: An asteroid is a rock-like object with an irregular shape.
answer:

if an asteroid is made of a material then that asteroid has the properties of that material.