Phillis Wheatley compares the human heart to the setting sun.
The diagram is used by biologists to determine the probability of an offspring having a particular genotype
The answer would be flock
A. Immune system
It helps our bodies fight everything that comes in our path.
<span>Diffusion. Diffusion is when particles in a highly concentrated area spread out to an area of lower concentration. The membranes of cells are very thin, which allows diffusion of different materials to happen easily.
During respiration, oxygen and glucose concentration in the cell is lower than in the surrounding blood. This causes oxygen and glucose to move into the cell via diffusion. Carbon dioxide is produced inside the cell and this makes the concentration of CO2 higher in the cell than in the blood, so the excess diffuses out of the cell.</span>