What causes the seafloor to spread apart at mid-ocean ridges? Select one:

Waves in the ocean pull the plates away from each other.

Earth is growing in size, and the mid-ocean ridges are where the crust has cracked to allow Earth to get bigger.

Earth's magnetic field is so strong it pushes apart iron-filled rocks.

Hot magma rises through the boundary at mid-ocean ridges, creating new rock and pushing apart the plates.

A/an map shows the types of rock and/or sediment present in a particular region. a map that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map. to show the dominant weather pattern in a region over a long period, a scientist is likely to create a/an map. a map has contour lines, which connect points at the same elevation. a map that uses shading to represent rates of violent crime across a state is an example of a/an map.

Select the sentence from the section "father inspired her belief in education" that is most relevant to the central idea of the article.

Which of the following geographic terms could be applied to the countries of central america? a. isthmus b. canal c. peninsula d. island