Final answer:
The term that describes an event like a fire or storm which changes a community is C) Disturbance. Such events can cause ecological succession where the ecosystem gradually recovers over time.
Step-by-step explanation:
The term that describes an event like a fire or storm that alters a community by removing organisms or changing resource availability is C) Disturbance. These disturbances can result from natural processes, such as lightning causing a forest fire, or human activities, like logging a forest. They can lead to a sequence of events known as ecological succession, where an ecosystem recovers and regrows in stages after a disturbance. The impact of disturbances, whether natural or anthropogenic, is significant and can affect biodiversity and ecosystem functions.