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: volcanic ash in the atmosphere decreases the temperature by blocking the sun. 
Fact 2: Or a veil of tiny particles from a volcanic eruption can block the sun.

SOLUTION: volcanoes can block the sun.

PROBLEM: Fact 1: Bone provides protection for soft tissues and internal organs. 
Fact 2: Soft tissue refers to the soft connective or supporting tissues, such as muscle.

SOLUTION: Bone provides protection for muscles and internal organs.

PROBLEM: Fact 1: Playing is just one of many ways that mammals and other animals learn how to behave. 
Fact 2: Learning and memory are essential to an animal's ability to survive and thrive.

SOLUTION:
Playing is one of many ways animal improve ability to survive and thrive.

