Final answer:
Heat, moisture, and air exposure affect the quality of herbs and spices. It is important to store them in airtight containers to maintain their quality.
Step-by-step explanation:
Heat, moisture, and air exposure affect the quality of herbs and spices. The aromas and flavors of spices are volatile and can be lost when left exposed to the air for extended periods. Therefore, it is important to store herbs and spices in airtight containers to maintain their quality. Additionally, temperature and moisture can also impact the shelf life and potency of dried herbs.