<span>B. An infrared wave is shorter than visible light.</span>
The correct answer is the cluster sample is obtained by selecting individuals who are easily contracted rather than who voluntarily respond because cluster sampling is a way of dividing a group then the individual responsible for picking from the selected population will select people from the cluster in which is easily contacted.
Answer:
The idea of concentrations and gradients within them is important when understanding the movement of substances across cell membranes. The more particles there are in a certain volume, the more concentrated those particles are. A solution with a low solute concentration has a high water concentration, and a high water potential.