Scientists can determine the age of rock layers by using the fossils of extinct species, called index fossils, as a tool to identify the age of a rock layer. Question 3 options: True False

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

Describe at least three examples of how people and wildlife have adapted to their environments in the middle east.

The amazon river is in africa true or false