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Some materials have negative temperature coefficients of resistance, and some have positive temperature coefficients. Carbon is an example of a substance with a negative thermal coefficient of resistance, so it's resistance will decrease as it gets hotter.
Pretty much every single material could be improved using some sort of technology...
Some positive effects of technology has had on humans were some including new medical discoveries, sex changes, cancer preventing drugs, some lessening of the racism to the gay and lesbian people and finally the fact that more faster ways of travel have been developed.
read sciance in action 9 for the answer
Technology has made great contribution in the evolution of this modern society.In every day life almost everything is connected to technology in some or the other way.However technology has its benefits and its negative aspects as well.