The two factors that combine to keep Earth and the moon in their orbits are

a. gravity and orbital speed.

b. orbital speed and mass.

c. mass and inertia.

d. gravity and inertia.

What do we call the process of erosion where soluble rocks are dissolved by the water?

What is the term for the boundary between a layer of sedimentary rocks overlying folded sedimentary layers?

Which of the following political theorists and philosophers were in favor of capitalism A. Adam Smith B. Karl Marx C. Jean-Jacques Rousseau D. John Locke

What are elliptical galaxies mostly made of?

Select the correct answer. A number is selected at random from the set {2, 3, 4, ... 10}. Which event, by definition, covers the entire sample space of this experiment? A. The number is greater than 2. B. The number is not divisible by 5. C.

How many states are in the northeast region?

Is Zika an epidemic or pandemic?

What is the most populous region of both the united states and canada

Name two factors that cause the pressure belts of the primary circulation patterns to break up into secondary wind regimes.

Brazil is home to 20 % of the known living species on earth