can form through changes in the number of . Gains result in negative and losses result in positive . Together makes up

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

What material does not melt at any temperature

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.