Answer:
<em>e</em><em>r</em><em>o</em><em>s</em><em>i</em><em>o</em><em>n</em><em> </em><em>a</em><em>n</em><em>d</em><em> </em><em>p</em><em>l</em><em>a</em><em>t</em><em>e</em><em> </em><em>t</em><em>e</em><em>c</em><em>t</em><em>o</em><em>n</em><em>i</em><em>c</em><em>s</em><em>.</em>
Explanation:
erosion and plate tectonics has probably destroyed all of the solid rocks that were older than 3.8 billion years.
Answer:
Some did not have animals that could be domesticated around them.
The Neolithic Revolution was critical because it signified the transition to agriculture. It is believed that the civilization was driven largely by environmental changes--a gradual warming that allowed people to begin cultivating.
Explanation:
Answer:
Index fossils, intrustions and cross-cutting relationships.
Explanation:
The correct list of three different geologic features that help scientists determine the relative ages of rocks by their position is "index fossils, intrusions, and cross-cutting relationships".