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: Fungi have special structures for penetrating a host. 
Fact 2: Host tissue penetration occurs to the point of vascular connectivity.
Fungi can invade a host to the point of vascular conncectivity.

Fact 1: temperature changing can cause phase changes. 
Fact 2: If climate changes and temperatures rise, there are a number of potential effects.
Climate change is a phase change.

Fact 1: thirst is used to make an animal realize that it needs to replenish its bodily water by the body. 
Fact 2: Water is the best thirst quencher.

Water is best when an animal needs to hydrate.