What river in Africa was essentially used as a highway to transport gold and salt? A. The Nile River B. The Niger River C. The Kengali River D. The Senegal River

If an isotope has a half-life of 50 million years and an 1/8 of the sample remaining consists of that isotope, the age of the rock from which it was taken is:

Bulimia iis an eating disorder in which the person does not eat true or false

Which climate zone has the least change in temperature between winter and summer months? continental dry moderate tropical

Which of the following describes the composition of the lithosphere A: solid rock B: molten iron and granite C: molten rock D: solid iron and nickel

5. Describe the three types of magma. Include the silica content and explosivity

How was the Great Leap Forward supposed to increase China's production? A. by replacing private ownership of farms with common ownership B. by combining China's collectives into self-sufficient People's Communes C.

Oil and natural gas result from

A sphere made of steel is put in water and, surprisingly, it floats. Develop a hypothesis to explain this observation.

What is the primary economic activity of the outback is

Which African country faced a serious genocide in 1994, during which almost one million people were killed? A. Rwanda B. Zaire C. the Democratic Republic of the Congo D.