An aquifer is water stored in the

a. zone of aeration
b. zone of impermeability
c. zone of saturation
d. zone of porosity

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Modern weaponry has increased the number of deaths in wars and violent conflicts.

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.