D) all of the above
it is mostly A tho, but im pretty sure there are tourists that go there and that melting water is used for hydro-power too.
So D is your best choice
hope this helps
Answer:
The answer is Option C: Index fossils.
Explanation:
Index fossils are used to identify geologic periods or faunal stages in rock layers. These fossils must have a wide geographic distribution and manifest obvious evolutionary trends to help geologists and others who need this geological data to better understand the time scale and to pinpoint a time period. For example, ammonites were common during the Mesozoic Era, but they were extinct by the Cretaceous period. Geologists would use ammonites to help determine this time frame if present.
The reason why it is considered courageous for the musicians to play
"under the open sky" is because they are facing a dangerous situation.
<h3>What is Courage?</h3>
This refers to the quality that means that there is the strength to face fear and do the right thing.
Hence, it is important to note that for someone to display courage, then that means that they are facing threats or fear and need to overcome it.
Please note that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept.
Read more about courage here:
brainly.com/question/26489684
It’s B, they sometimes do follow the borders of countries
