How do scientists measure the strength of acids and bases describe this scale?

Water is important for the of cells. a: size, shape, and temperature b: temperature, color, and odor c: color, odor, and size d: shape, temperature, and color

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

Which of these is a density dependent factor? a. epidemic b. earthquake c. drought d. hurricane