Humber/Ontario Real Estate Course 4 Exam Practice

What does radon commonly influence?

1. Mold growth in moist environments.

2. Concentration in basement floor cracks.

3. Presence at the top levels of houses.

4. Weather patterns in the house vicinity.

5. Electrical flow interruptions.

6. Structural damage like foundation cracks.

The correct answer is: Concentration in basement floor cracks.

Radon is a naturally occurring radioactive gas that can seep into buildings from the ground, and its concentration is particularly notable in areas like basement floor cracks. This is due to the fact that radon originates from the breakdown of uranium in soil and rock, which often makes it more concentrated at lower levels of buildings, such as basements, where cracks or gaps provide pathways for it to enter. Monitoring radon levels is crucial for health reasons, as prolonged exposure can lead to serious respiratory problems, including lung cancer. Other choices mention unrelated factors. Mold growth in moist environments is more associated with humidity and lack of ventilation rather than radon. The presence of radon isn't typically higher at the top levels of houses, as it tends to accumulate in lower levels. Radon does not influence weather patterns in a house's vicinity, nor does it interfere with electrical flow, and while structural damage can occur over time due to other factors, radon does not directly cause foundation cracks.