Active transport performs which function in a cell? a. packages proteins for export from the cell b. distributes enzymes throughout the cytoplasm c. moves substances against a concentration gradient d. equalizes the concentration of water inside and outside the cell

the pic attached shows the stages of mitosis. hope it !

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs