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: Mollusks reproduce sexually. 
Fact 2: Some mollusks have a shell.
Example Output: some animals with shells reproduce sexually.

Example Input: Fact 1: Cancer is a disease in which cells divide out of control. 
Fact 2: With specific types of gene damage, the cell starts dividing out of control, forming a tumor.
Example Output: Cancer and tumors are a result of specific types of gene damage.

Example Input: Fact 1: the movement of tectonic plates causes volcanic eruptions. 
Fact 2: Large volcanic eruptions can decrease (reduce)the earth's average temperature by (a) emitting particles into the stratosphere, thereby increasing the albedo.
Example Output:
The movement of tectonic plates can lower the average temperature of the earth.