Can You Fix These Common Home System Failures? Test Your DIY Repair Skills!Share:FacebookPinterestTwitterMail25. What is a common cause of mold growth in basements?100%Next Post Correct Incorrect Moisture buildup due to poor air flow encourages mold growth. 25. What is a common cause of mold growth in basements? Overheated furnace Too much sunlight Broken smoke detector Poor ventilation 100%