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.

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.
Bone provides protection for muscles and internal organs.

Fact 1: Some viruses have an envelope of phospholipids and proteins. 
Fact 2: Viruses are enveloped by similar membranes.
viruses have similar membranes.

Fact 1: Pneumonia may be caused by an infection or injury of the lungs. 
Fact 2: If fluid builds up within the lung tissue , it is called pneumonia.

fluid build up in the lung tissue may be caused by infection or injury of the lungs.

