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: Communities consist of populations of different species. 
Fact 2: Biodiversity is a lot more than just the number of different plant and animal species.
Communities consist of populations that are biodiverse.

Fact 1: coal is used for generating heat by burning. 
Fact 2: Thus, the food is cooked by heat generated internally.
coal can be used to cook food.

Fact 1: Adult worms go through a major transformation to develop reproductive organs. 
Fact 2: After about a week the larvae leave the nodules and continue to develop into adult worms.

larvae leave the nodules and continue to transform until having reproductive organs.