What is the krebs cycle

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

Looking at this image, what relationship can be drawn from it? the lower the degree of latitude, the lower the degree of temperature there is no relationship between latitude and temperature the higher the degree of latitude, the higher the degree of temperature the lower the degree of latitude, the higher the degree of temperature