Why you do sometimes shiver when you're cold?

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

Which event would lead to primary succession of a forest?

What's the waste product of electrons and pyruvate combining in fermentation?