How is the density of an object calculated?
a. dividing the object’s mass by its volume
b. dividing the object’s volume by its mass
c. multiplying the object’s mass and volume
d. multiplying the object’s volume and weight

Why did large numbers of african migrate to the americas

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

Which season occurs in the northern hemisphere when the sun is at its lowest point in the sky