TASK DEFINITION: Given a scientific question, generate a correct answer to it.
PROBLEM: Shielding should be used when receiving x-rays to limit exposure to what potentially harmful form of energy?

SOLUTION: radiation

PROBLEM: What is secreted before ejaculation to neutralize acidic urine remaining in the urethra?

SOLUTION: clear mucus

PROBLEM: What occurs if oxygen cannot be obtained at a sufficient rate?

SOLUTION:
anaerobic respiration