What is the correct definition of a solution? a. a heterogeneous mixture b. a graduated substance c. a primary mixture of elements d. a homogeneous mixture

How many miles of calcium oxide will be produced when 1.6 miles of iron (iii) oxide react with calcium phosphate

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature