Answer:
D) the steady, clocklike decay of certain radioactive isotopes over time.
Explanation:
Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks.
For example, when rocks are formed, such as igneous rocks (formed when molten rocks cools), certain radioactive atoms are trapped inside the rocks during this formation process. Then these radioactive atoms decay over time.
The age of the rock can be estimated by comparing the occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.
From the options;
A) this is about the formation of the radioactive molecules and not about radiometric dating
B) this is radiocarbon dating (cabon dating/carbon-14 dating)
C) the <em>assumption </em>is wrong since the radioactive isotopes decays not accumulate.
D) the corect option as I explained earlier.
The answer is the option B) hydrosphere.The prefix hydro means water and
so the name hydrosphere is the term used to refer to all the bodies of
water in the Earth, including oceans, groundwater and
glaciers.Atmosphere refers to the gas layer, biosphere to the regions
where there is life and geosphere refers to all the layers in Earth.
are there any answer choices?
Answer:
At the top theres less air and a higher elivation
Explanation:
Answer:
The parts of North America on the same latitude as the northern and southernmost parts of Scandinavia are Canada and Alaska
Explanation:
The artic circle is one of the famous latitudes that is located at the topmost part of the globe. It runs through 66°33′48.2″ above the equatorial line. The artic circle passes through the following countries as it circles the globe latitudinally.
1. Alaska
2. Canada
3.Russia
4. Norway
5. Finland
6. Sweden
Canada and Norway lie on the same latitude as Finland and Sweden which are the northern and southern parts of Scandinavia
