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 correct answer is the following.
Rank the following areas in order of largest to the smallest change in average temperature since 1880.
This is the correct rank.
1.- Eastern Pacific Ocean.
2.- Western Europe.
3.- North Canada.
4.- Southern Africa.
5.- Antarctic Ocean Australia.
Scientists agree that 2018 was one of the warmest years on planet earth. The weather phenomenon called "El Niño" o "La Niña" directly affects the temperature of the planet each year. The region of the Mediterranean Sea had the most elevated temperatures. On the other hand, regions of North America and Canada had lower temperatures than average.
Answer:
So the wavelength of light is 1015.7 nm
Explanation:
From Wein's displacement law, we can write the following formula;
here, 
is the wavelength of maximum radiation in meters
T is the absolute temperature (in Kelvin) for maximum radiation
K is the constant has a value of 
Given here, T = 2853 K
And we need to find
Putting the values in formula
Answer:
I can answer number 2.
Explanation:
There is no volcanic activity associated with conservative plates, though earthquakes can often occur.
Answer:
because time period does not depend upon the weight of the world
