Answer:
C
Explanation:
The one that got caught was the one that was most likely least essential to the herds' survival. It was either sick, young, elderly or injured.
First let me say this, i may be wrong. I think it would change over time because first of all the sandstone has different densities. Different kinds off rocks erode and get broken down by the wind at different rates. If its density is higher, it will take longer to erode
The triangle is an Acute angle triangle.
