Answer:
Blockchain has the potential to grow to be a bedrock of the worldwide record-keeping systems, but was launched just 10 years ago. It was created by the unknown persons behind the online cash currency bitcoin, under the pseudonym of Satoshi Nakamoto.
Explanation:
Answer: C
The city closed all parks.
Explanation: hoped you all did well:}
sub marines are able to success fully navigate under water
1.a chart showing how deep the Grand Canyon is
2.a map of Arizona showing the Grand Canyon
hope this helps
