TASK DEFINITION: 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.
PROBLEM: Fact 1: the Himalayas were formed by rock folding. 
Fact 2: Movements in the earth's crust have folded and cracked the older rocks.

SOLUTION: the Himalayas were formed from older rock.

PROBLEM: Fact 1: if a tree falls then sunlight becomes available to the surrounding plants. 
Fact 2: When a big tree falls, sunlight shines on smaller plants and they get a chance to grow.

SOLUTION: Plants grow better when surrounding trees fall.

PROBLEM: Fact 1: Jaws also make cartilaginous fish excellent predators. 
Fact 2: Alligators have jaws designed for ripping and tearing flesh rather than for chewing it.

SOLUTION:
Excellent predators can rip and tear flesh.