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.
Primary succession occurs on ground which had no previous  vegetation, including lava flows, bare rock and sand dunes. For  example, newly created volcanic island    â¦ Secondary Succession follows the destruction or modification  of existing vegetation, either naturally or by human activity. Primary Succession occurs on surfaces where no soil exists, And  Secondary Succession follows a disturbance that destroys a  community without destroying the soil.   Primary succession is slow and secondary succession is rapid.