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.
Learn more about append-only data structure on:
brainly.com/question/25558500
Answer: 1 & 2 only
Explanation: wolves from canada is a reintroduction of essentially a native species, but 1 and 2 deal with large displacement into a completely different environment.
B because that’s what her parents want
Melting and Freezing is an example of energy changing from one form to another.
In melting, heat energy is added to a solid, and it becomes a liquid.
In freezing, heat energy is removed from a liquid, and it becomes a solid.
Answer:
a control handwriting sample from those involved
Explanation:
When experts need to identify the handwriting in a paper, they use sample documents from people involved to make comparisons and determine who is the person that wrote that. This process of analyzing the handwriting involves checking the documents for differences that can help to determine if the same person wrote the two papers and if there are enough differences, experts would conclude that both papers weren't written by the same person. So, according to this, the answer is that in order to identify the handwriting on the paper, the expert would need a control handwriting sample from those involved.