A low technology approach to treating water in rural locatio…

A lоw technоlоgy аpproаch to treаting water in rural locations is to fill clear plastic soda bottles with water and leave them out all day in the sun (e.g., up on a roof). The sun produces two factors important in killing microbes: heat, and ultraviolet light. How does each of these factors help to kill microbes, i.e., what impact does each (heat and UV) have? Be specific: do not just state "it kills them", but explain why or how, including what structures or cellular components would be impacted.