In an experimental investigation, the variable that the researcher changes or manipulates in order to see its effects is called the?

In the agriculture system of East Africa, what is the role of men

Which statement about El Salvador is not true? a. El Salvador is prone to earthquakes. b. El Salvador is the largest country is Central America. c. San Salvador is the largest city in El Salvador. d.

Which three Amendments were added to the Constitution after the Civil War?

Hot spots and aseismic ridges can be used to determine: select one: a. the location of divergent plate boundaries b. the absolute motion of plates c. the location of magnetic anomalies in oceanic crust d. the relative motion of plates e.

How does the banding pattern of rocks and the dating of these rocks give evidence of sea floor spreading?

Which of the following is an example of a conditional statement

According to the map the trade route between ancient Egypt and the Indus Valley was approximately

The average temperature on planet Earth is higher than you would expect just from the heating of sunlight alone. What is the explanation for this?

What are 4 types of air masses that affect the continental us?

Which term describes a section of Earth's structure below moving continents as parts of large plates? A. continental crust B. earth core C. asthenosphere D. divergent boundary