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.
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Question: Fact 1: Mammals can also generate little bursts of heat by shivering. 
Fact 2: All humans are mammals.

Answer: humans can generate little bursts of heat by shivering.


Question: Fact 1: Brain cells die quickly if their oxygen supply is cut off. 
Fact 2: Without proper brain functioning the body dies.

Answer: without oxygen the body dies.


Question: Fact 1: absorbing energy causes objects to heat. 
Fact 2: Sunlight shines through the atmosphere and is absorbed by the Earth's surface.

Answer:
Sunlight heats the Earth's surface.