Area codes are for phone numbers. Area codes are the first 3 digits of the phone number. Usually represent the area ppl live in. Example: (213) 555-6666 --> area code 213. Zip codes are for mailing addresses.
Ecological succession is the observed process of change in the species structure of an ecological community over time. Within any community some species may become less abundant over some time interval, or they may even vanish from the ecosystem altogether.
For instance, primary succession is succession that begins in an area where the soil has not yet formed. Examples of events that precede primary succession would be the formation of a new island by a volcanic eruption or the retreat of a glacier.