Would a thermos without a lid with water in it be an open or closed system? I'm so confused... also please explain your answer, I'll give brainliest!!

What is the main reason why some developing countries fear the increase the free trade policies around the world?

What occurs when a cell engulfs large food particals

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !