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: a delta is formed by deposition of sediment at the mouth of a river by water fanning out. 
Fact 2: Rivers provide a water supply.
Example Output: a delta is formed by deposition of sediment at the mouth of a water supply fanning out.

Example Input: Fact 1: All plants have a characteristic life cycle that includes alternation of generations. 
Fact 2: Plants have chlorophyll and an alternation of generations .
Example Output: Plants have chlorophyll and a characteristic life cycle.

Example Input: Fact 1: Sperm had to swim from male to female reproductive organs for fertilization. 
Fact 2: If fertilization occurs, the fertilized eggs are now described as pre-embryos or zygotes.
Example Output:
Sperm had to swim from male to female reproductive organs for zygotes to occur.