A student is making a model of the layers of Earth. She is using materials with different densities to represent the layers. The table shows the materials she has chosen for two layers. How should the density of the material the student uses for the mantle compare to the density of the materials chosen for the other layers?

It should be more dense than foam.

It should be more dense than glass,

It should be the same density as foam

It should be the same density as glass.

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 chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

Pls ill give u brainliest which of the following is true about science? 1. political conditions are unable to influence it. 2. economic concerns may prevent it from solving problems.