Answer:
By transfer of electron from electropositive to electronegative elements
Explanation:
Examples are NaCl, MgO, Al2O3
A solvent is something that can have something else dissolved within it and turn into a homogenous solution, while the solute is that something else that can be dissolved into the solvent. Usually, the solvent is found in greater amount because most (except for rare cases) solvents have a saturation point that is below the equal-mass point.
Answer: materials and design Techniques that reduce the negative environmental impact of a structure
Explanation: