Earth science mini report

What natural events have effects the formation or quality of the Ocean, Lakes and rivers?

write a 3 page paper based on it. The topics are general and meant as a guide, you may choose to focus on one area or a related example please don't try to cover everything. The mini report needs to have 3 sources and can include images, figures and tables as appropriate.  And please attach the reference page. Please attach your work using a doc