Can somebody please help me please?

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.