Volcanic rock has often been found early in the rock record but less frequently in later rock layers. What does this suggest to scientists about early earth?.

Liquefaction is a. a quicksand-like condition arising in some wet soils during earthquakes. b. flooding caused by tsunamis. c. flooding of coastal areas due to tectonic subsidence. d. flooding caused by dam failure resulting from an earthquake.

Which of the timelines above correctly shows the order of historical events on the african continent? a. one (1) b. two (2) c. three (3) d. four (4)

Using examples from various part of the world. examine the assertion that mere presence of abundant natural resources in a country does not guarantee rapid socio economic development