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: a speedometer is used for giving a driver feedback on the speed of their vehicle. 
Fact 2: Speed is the magnitude of velocity.
A speedometer is used for giving feedback on the velocity of a vehicle.

Fact 1: eating food that contains pesticides can have a negative impact on humans. 
Fact 2: Foods such as porous strawberries are hard to wash free of pesticides.
Eating unwashed strawberries can have a negative impact on humans.

Fact 1: some flowers become fruits. 
Fact 2: Cucumber fruit are produced only when insects carry pollen to the female flower.

Cucumber flowers are pollinated by insects to create cucumbers.

