Answer:
C) X = 100 % ; Y = 0 %
Explanation:
At the time the rock originally formed, you had only the parent isotope X and the daughter isotope Y had not yet had time to form.
You had 100 % X and 0 % Y.
True
Explanation:
An unconformity between two parallel layers of sedimentary rocks is classified as a disconformity.
A disconformity is a type of unconformity.
An unconformity is a significant break in the stratigraphic record of a formation. There are different types of unconformity;
- A disconformity is an unconformity between parallel layers of sedimentary rocks.
- A non-conformity is an unconformity between two different rock types.
- A para-conformity is an unconformity between two parallels layers marked by differences in fossil age.
- An angular unconformity is an unconformity between two layers that are at an angle to one another.
The main cause of unconformity is usually non-deposition and erosion.
learn more:
Sedimentary rocks brainly.com/question/9131992
#learnwithBrainly
Image 4, there’s nobody in the picture. it seems like no population is there unlike the others which is huge cities.
Answer:
x = 16
Explanation:
Since ΔFGH and ΔKJH are similar, let's compare their sides.
So that;
= 
= 
cross multiply to have;
32(4x - 25) = 52(x + 8)
128x - 800 = 52x + 416
128x - 52x = 416 + 800
76x = 1216
x = 
= 16
x = 16
Therefore, x = 16.
