The correct option is C.
The position of a place on the equator is usually measured in degree of latitude. Latitude is the geographical coordinate, which specifies the north south position of a point on the earth surface. Lines of latitudes are called parallels. The equator is zero degree, the north pole is 90 degree north and the south pole is 90 degree south.
Around 75% of ice has melted I think !
I would venture to say that the country in South America that has the least amount of disposable water would be probably in northern Chile which is a desert ie the Atacama desert which stretches from the Pacific across to the Andes Mts while on the other hand, in southern Chile there is a temperate climate with significant rainfall and considerable disposable water.
Since when you write in scientific notation and the first number has to be infront the decimal, it would be 6x10^-6 and it would be a negative because you moved the decimal to the write and not the left to make it positive hope this helps :))))
