Which observation proves that a cell is a eukaryote?

a: it contains cytosol

b: it has a nucleus

c it has a cytoskeleton

d: it has a cell membrane

Which hormone is used by both males and female?

The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?

An infection of the pulp and the surrounding tissue in the mouth is called