You are a geologist trying to determine if the slope on which your client’s house sits is stable. You determine that the angle o
f repose of the hillside is 35 degrees. You could consider the slope stable if it is composed of 1) saturated sand
2) dry sand
3) saturated gravel
4) dry gravel
The period of Earth's history<span> that began 2.5 billion years ago and ended 542.0 million ... Stromatolites are </span>rare fossils<span> after about 450 million years ago</span>