This is the movement of particles from an area of high concentration to an area of low concentration along the concentration gradient?

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

The energy required to vaporize a certain amount of a substance is greater than the amount of energy necessary to raise the temperature of the same amout of that substance by 1 degreee celcius

What organ is the first to receive nutrients that have been absorbed from the digestive tract?