Christina wanted to know more about the effects of earthquakes, so she created a model and performed an experiment. in christina's model, she carefully layered different types of rock and soil in a large, clear, plastic container. after taking a picture of the layers through the side of the container, she shook the container from side to side. then, she compared the layers in the container with the picture taken before shaking and made note of the differences. what is a benefit of christina's model?

Does the temperature affect the solubility of sugar and salt in water? if it does tell me like different temperatures with different solubilities so i can sketch down a graph

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as