The model that describes how data is written to a blockchain is the: append-only data structure.
<h3>What is an Append-only Data Structure?</h3>
Append-only is computer data storage property whereby new data can be added to a blockchain, like an additional block, in a time-ordered sequential order in such a way that the data added cannot be easily altered as al data are permanently stored across all nodes.
The append-only data structure makes data stored almost immutable. This is the model in which the blockchain technology is built on.
Therefore, the model that describes how data is written to a blockchain is the: append-only data structure.
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Answer: Southeast Asian City Model
Explanation: should help
Answer: more than 30,000
Explanation:
The U.S. Coast guard has protected the U.S. coastline for centuries. They provide maritime law enforcement, aid navigation, protect the marine environment and most relevantly, embark on search and rescue missions.
The year 2013 saw them respond to more than 30,000 search and rescue missions which enabled them to save over 7,000 lives.
