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.

Input: Consider Input: Fact 1: Humans have collected and grown mushrooms for food for thousands of years. 
Fact 2: Yeast and mushrooms are types of fungus.

Output: Humans have collected and grown fungus for food for thousands of years.


Input: Consider Input: Fact 1: Some species of reptiles can go several weeks between meals. 
Fact 2: Reptiles lay eggs protected by leathery shells.

Output: Some layers of leathery eggs can go several weeks between meals.


Input: Consider Input: Fact 1: Evaporation of sweat uses energy, and the energy comes from body heat. 
Fact 2: Heat When exercising, the body creates excess heat.


Output: Evaporation of sweat uses energy, and the energy comes from exercise.