1). How did water form on the Earth’s Surface? Is there more than one theory? Explain
2). Does soil humus act as if it has a positive or negative charge at neutral pH?
3). Explain how volcanic erruptions can cause year long cooling in the mean global surface temperature. Why does the effect of a eruption last do long?
Each question must be answered paragraph form using references and citations.

Leave a Reply

Your email address will not be published. Required fields are marked *