Ionic crystals have high boiling points because: A. the positive and negative charges prevent them from absorbing heat quickly.

B. the structure has a large surface area to absorb heat quickly.

C. breaking ionic bonds requires a large amount of energy.

D. They do not have high boiling points.

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory