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: Cuticle helps prevent water loss, abrasions, infections, and damage from toxins. 
Fact 2: Transpiration , on the other hand, is the loss of water by plants.
[A]: cuticle helps prevent transpiration.


[Q]: Fact 1: a valley is formed by a river flowing. 
Fact 2: Rivers erode the rocks they flow over.
[A]: Water erodes rocks as they flow over, creating a valley.


[Q]: Fact 1: lakes are formed by precipitation and runoff. 
Fact 2: For example, Lake Tahoe is a huge lake originating from mountain stream runoff.
[A]:
Lake Tahoe originates from a mountain stream.