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.

Example Input: Fact 1: Energy is passed up a food chain or web from lower to higher trophic levels. 
Fact 2: Energy and carbon in organic compounds passed through food chain to herbivores and carnivores.
Example Output: Carbon in organic compounds are passed through the food web from herbivores to carnivores.

Example Input: Fact 1: Earth 's tilt on its rotating axis causes seasons to change. 
Fact 2: Habitats change with the seasons.
Example Output: Earth 's tilt on its axis causes habitats to change.

Example Input: Fact 1: Blood pressure is highest in arteries and lowest in veins. 
Fact 2: Veins are vessels that bring blood to the heart.
Example Output:
Vessels that bring blood to the heart have lower blood pressure than arteries.