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: if seeds stick to the fur of an animal then that seed will be transported by the animal. 
Fact 2: Along with the wind, birds are the primary transporters of berries and seed.
Birds can carry seeds in their feathers.

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: air pollution can cause the pH of soil to decrease. 
Fact 2: Acidity increases as the pH number decreases, and alkalinity increases as the pH number increases.

air pollution can cause soil acidity to increase.