TASK DEFINITION: Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
PROBLEM: Question: Cigarettes are a major source of what kind of chemical substances linked with cancer? Answer: carcinogens

SOLUTION: Courtesy of the CDC/Debora Cartagena. Cigarettes are a major source of chemical carcinogens .

PROBLEM: Question: Which type of cell division halves the number of chromosomes? Answer: meiosis

SOLUTION: Meiosis is a type of cell division that halves the number of chromosomes.

PROBLEM: Question: What devices convert mechanical energy to electric energy? Answer: electric generators

SOLUTION:
Electric generators convert mechanical energy to electric energy.