Radioactive isotope with long half life would be the way to date a sample of rock that you suspect as being one of the earliest on Earth. Archaeologists very often use this method for checking the dates of the materials they excavate. I hope that this is the answer you were looking for and it has come to your help.
There are no option choices so here.
Shovels, Diggers, Wells, Pipes. Hope this helps.
I would probably go with A because judging from the map it looks like most of it is mountains. <span />
Atlantic Ocean
Near the Azores (islands)
1,100 miles from Lisbon
1,300 miles from Casablanca
2,100 miles from Boston
Answer:
<u>Proxima Centauri is the closest star to that of the sun and being 4.22 light years away from the earth having an apparent magnitude of 12.95</u>.
Explanation:
- Being a small and low mass star locate away from the sun in southern constellation being discovered in 1915 by Robert innings. Having an apparent magnitude of 11.3 having an Astronomical number of 12,950 from the orbital period of 550,000 years.
- Proxima Centauri is a red dwarf star with a mass of eight times that of sun, and an average density that of sun, more than 85%of the radiation is infrared and has the regular activity of starspots.
- Being closes to the sun around 32,000 years away. It thass an orbital period of 3.6 to 14 days.
