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: Plants use unsaturated fatty acids to store energy. 
Fact 2: Silver sage is a Plant Select plant.
Example Output: silver sage may use unsaturated fatty acids to store energy.

Example Input: Fact 1: Some species of reptiles can go several weeks between meals. 
Fact 2: Snakes are cold-blooded reptiles.
Example Output: Some species of snakes can go several weeks between meals.

Example Input: Fact 1: Ice ages buried the planet in snow and ice for millions of years at a time. 
Fact 2: By far and away the biggest climate changes are ice ages.
Example Output:
climate change can bury the planet in snow.