Scientists estimate the age of the earth to be at least 4.4 billion years old. How would they know that?
Select one:
a. Radiometric dating of rocks led us to the oldest rock formation on the planet.
b. 4.4 billion years is just a number passed down but nobody really knows where it came
from
C. Scientists estimated that if the sun is 4.6 billion years old, the earth must be just a bit
younger
d. Scientists can count Earth layers like rings on trees and estimate how old the planet is

answer; talc and gypsum;

the answer is minerals.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.