Final answer:
Wood rot is caused by improper ventilation and too much moisture, which create an ideal environment for fungi to grow and feed on the wood. 'White-rot' fungi break down the components of wood.
Step-by-step explanation:
Wood rot is caused by a combination of factors, namely improper ventilation and too much moisture. When wood is exposed to excessive moisture and lacks proper airflow, it creates the perfect environment for fungi to grow and feed on the wood. These fungi, known as 'white-rot' fungi, break down the components of wood, including cellulose, hemicellulose, and lignin.