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: All plants have a characteristic life cycle that includes alternation of generations. 
Fact 2: Plants have chlorophyll and an alternation of generations .

SOLUTION: Plants have chlorophyll and a characteristic life cycle.

PROBLEM: Fact 1: Scientists who find and study fossils are called paleontologists. 
Fact 2: Earth scientists study fossils.

SOLUTION: Paleontologists are earth scientists.

PROBLEM: Fact 1: photosynthesis means producers convert from carbon dioxide, water, and solar energy into carbohydrates for themselves. 
Fact 2: Plants are Earth's producers.

SOLUTION:
Plants create their own carbohydrates through photosynthesis.