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: Mammals can also generate little bursts of heat by shivering. 
Fact 2: All humans are mammals.
[A]: humans can generate little bursts of heat by shivering.


[Q]: Fact 1: carpooling decreases the amount of cars used to travel to a place. 
Fact 2: And fewer cars means less pollution.
[A]: carpooling leads to less pollution.


[Q]: Fact 1: Organisms use lipids to store energy. 
Fact 2: Lipids Lipids are also composed of carbon, oxygen and hydrogen.
[A]:
Organisms use carbon, oxygen, and hydrogen to store energy.