Discuss the age of earth and tell how the discovery of radioactively aided scientists in constructing a detailed geologic time record.

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

Which countries were controlled by france at the beginning of world war i? hint: use the map in the lesson to you answer this question. algeria burma cambodia indonesia vietnam

Is an official language in every north african country