Why is the earth round?

Why is the water blue?
Why doesn't the water fall off the earth?

the earth is not perfectly round, water is blue because particles reflect blue light. The water cycle, type that in and google it to find out for yourself. I'd give u the link to the site with all your answers, but thwe stupid sites doesn't allow it. I'd explain it myself, but it take up too many characters.

4+5

negetive 23 is greater than or equal to what number + negetive 6