instruction:
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.
question:
Fact 1: if a neutral atom loses an electron then an atom with a negative charge will be formed. 
Fact 2: Negative charges are attracted to positive charges.
answer:
A neutral atom that loses an electron will be attracted to positive charges?.


question:
Fact 1: pollutants have a negative impact on the environment. 
Fact 2: Environment and Health Environment and Health All living things depend on their environment.
answer:
pollutants have a negative impact on all living things.


question:
Fact 1: sonar is used to find the location of an object. 
Fact 2: Submarines use sonar to find objects under the water, including other submarines.
answer:

Sonar is used to find other submarines.