How does the polarity of the solute affect how well a solvent will dissolve? it allows the solvent to absorb more heat it has no effect the freezing point of the solvent will increase the solute will ionize more completely within the solvent similar polarity makes the solvent more likely to dissolve?

Polarity is the ability to distinguish between the electric charge of a molecule or different chemical groups having dipoles or multipole moment. Polar molecules have polar bonds based on the difference in electronegativity between atoms bonded together. Polarity affects how solvents dissolve by following the idea that "like dissolves like" in other words, polar molecules are best dissolved in polar solvents and nonpolar molecules dissolve better in nonpolar solvents. Moreover, ionic solvents dissolve polar solutes. By this the final answer is E, similar polarity makes the solvent more likely to dissolve

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.