Finally, it also assists in moving materials in and out of the cell. Through a series of intercellular proteins, the cytoskeleton<span> gives a cell its shape, offers support, and facilitates movement through three </span>main<span> components: microfilaments, intermediate filaments, and microtubules.</span>
Answer D is correct, Wikipedia says that they move water from roots to stems and leaves.
Answer: "Hemoglobin is a protein in your red blood cells that carries oxygen to your body's organs and tissues and transports carbon dioxide from your organs and tissues back to your lungs."
Answer: C
Explanation: Earth's atmosphere isn't very dense because it is made of air, which floats. Human beings are denser then air since they are solid, but not as dense as Earth's crust, which is rocky and the densest out of the three.
