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.

Fact 1: an animal usually requires a warm body temperature for survival. 
Fact 2: Many warm-blooded animals control their body temperature by sweating or panting.
warm-blooded creatures control their body temperature by sweating or panting for survival.

Fact 1: Monotremes are mammals that reproduce by laying eggs. 
Fact 2: Like the platypus, an echidna is an egg laying mammal.
Platypus are monotremes.

Fact 1: an incandescent light bulb converts electricity into light by sending electricity through a filament. 
Fact 2: Light is the oscillations in the electric field.

Incandescent bulbs convert electricity into oscillations in the electric field.