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: Female gametophytes produce eggs inside the ovaries of flowers. 
Fact 2: Fruits develop from the ovary of the flower.
Example Output: Female gametophytes produce eggs inside the fruit of flowers.

Example Input: Fact 1: rain causes erosion. 
Fact 2: Erosion is the breaking apart and moving of rocks and soil.
Example Output: Rain causes the breaking apart and moving of rocks and soil.

Example Input: Fact 1: Heterotrophs are living things that cannot make their own food. 
Fact 2: Proteins are an essential nutrient for heterotrophs .
Example Output:
Living things that can't make their own food need protein.