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: a light bulb requires electrical energy to produce light. 
Fact 2: Light is a part of the electromagnetic spectrum.
[A]: A bulb requires electrical energy to produce part of the electromagnetic spectrum.


[Q]: Fact 1: being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time. 
Fact 2: Most coal is fossil peat.
[A]: fossils turn into coal over time.


[Q]: Fact 1: Marine species live mainly in shallow coastal waters. 
Fact 2: Along the coastal zone are situated shallow banks which are very rich in fish.
[A]:
Marine species live mainly in waters which are very rich in fish.