8. Arteries carry oxygenated blood from the heart to the rest of the body, while veins carry deoxygenated blood from the body, back to the heart. Arteries are thick and muscular, while veins aren't as thick, and they have valves.
Material to diffuse is independent or dependent variable...
Answer:
Yellow
Explanation:
Yellow carrots: highest in lutein, may also contain zeaxanthin.This is the result of certain carotenoid pigments present in the root.
If we had no cilia in our trachea, our lungs would be filled with dust and microorganisms that we breathe in.
Answer:
The lowest region of the atmosphere
Explanation:
What google says:
the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.