Answer:
2.6 billion years old
Explanation:
Initial:
100% k-40
0% ar-40
After 1.3 billion years:
50% k-40
50% ar-40
After 2.6 billion years:
25% k-40
75% ar-40
So the rock is 2.6 billion years old.
Answer:
Yy
Explanation:
Y is for yellow body because it is dominant and y is for blue body so Yy
Tectonic plates often shift position by the force of liquid rock emerging from blow the earth's surface and then cooling to form hard rock. This most often occurs On the ocean floor.
When tectonic plates move, They move along the ocean floor, which is the crust, and It cause earthquakes and volcanoes and also caused Pangaea to break apart and become what it is now, The seven continents.
Hope this helped :)
have a great day
Answer:
We have to give their differences or what thw question is trying to say. I m not being able to understand the question
