The region of the world that was likely occupied last by early humans was
a.

south america.

c.

southern asia.
b.

north america.

d.

northern asia.

Which type of seismic waves are confined at the surface

Which of the following can scientists estimate geologic time? a. observing rock sequences b. radiometric dating c. comparing fossils d. all of these

How can you use a maps legend to plan your travel