How does mercury move through the ecosystem through excavation?

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

Define dew point. i am writing this part to be able to ask the question

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.