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: Protozoa can be classified on the basis of how they move. 
Fact 2: Cryptosporidium parvum is the hardest protozoa to kill.
Example Output: Animals like cyptosporidium are often classified on how they move.

Example Input: Fact 1: Hair helps to insulate and protect the body. 
Fact 2: Hair is used to insulate and keep the body warm in a large variety of climates.
Example Output: Hair helps to keep the body warm and protect it in a variety of climates.

Example Input: Fact 1: TRH stimulates the pituitary gland to produce thyroid-stimulating hormone, or TSH. 
Fact 2: Another function of TSH is to maintain the structural integrity of the thyroid gland.
Example Output:
TRH stimulates the pituitary gland to maintain structural integrity of the thyroid.