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: Chromoplasts make and store pigments. 
Fact 2: Chromoplasts are found in many flower petals and fruits.

A: Flower petals and fruits make and store pigments.
****
Q: Fact 1: Birds are endothermic tetrapod vertebrates. 
Fact 2: Class Aves is for the birds, literally.

A: Animals in the class aves are endothermic tetrapod vertebrates.
****
Q: Fact 1: Skin color is a polygenic trait. 
Fact 2: Polygenic inheritance Polygenic traits are controlled by an unknown number of genes.

A:
Skin color is inherited from a number of genes.
****