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.

Example Input: Fact 1: Earthworm burrows help aerate soil, which is also good for plants. 
Fact 2: Good drainage is essential for growing plants in containers.
Example Output: Earthworm burrows help aerate soil, which is essential for growing plants.

Example Input: Fact 1: gills are used for breathing water by aquatic animals. 
Fact 2: Fish are backboned aquatic animals.
Example Output: fish use gills for breathing water.

Example Input: Fact 1: electrical current running through a wire causes that wire to heat up. 
Fact 2: High currents allow too much power, or electrical energy to be wasted in wires in the form of heat.
Example Output:
High currents waste energy by heating up the wire.