It is useful for the walls of capillaries to consist of a single layer of thin, flattened cells in order to easily diffuse oxygen and nutrients easily from the blood and into the capillaries. Not only that, but this also makes it more efficient for carbon dioxide and other waste molecules to diffuse from the capillaries and into the blood. If capillaries were thicker than a cell, then it would be more difficult for materials to diffuse through the thick layer of cells.
Option c carbon hydrogen and oxygen
50-80 bpm is the average adult resting
heart rate
Answer:
Water is the solvent, and the salt is the solute
Explanation:
Answer:
Darwin's Theory of Evolution by Natural Selection: Individual variation: there are variations among individuals within species. ... Individuals vary in their ability to survive and reproduce. Those with the most favorable traits will survive longer and have more offspring.
Explanation:
