Which of these is an example of erosion? A light shining onto a mountain B wind blowing away sediment C rain breaking down rock D all of the above

B wind blowing away sediment

Explanation:

Erosion is the process whereby soil, nutrients, particles are transported away from one place to another via agents like water and wind. Generally, erosion exercises its effect on the surface of the soil.

Since erosion can occur as a result of action of water or wind on the surface of the Earth, "wind blowing away sediment" is an example of erosion among the other options listed in the question.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.