The answer is that <span>healthy </span>legs<span> have </span>veins<span> with smooth, elastic walls that </span>are<span> perfectly designed to </span>adapt<span> to the changes in pressure within a </span>vein<span>. </span>Veins<span> have </span>valves<span> that keep blood moving in one direction: back toward the heart. As the </span>leg<span> muscles </span>are<span> activated, the </span>venous valves<span> open to </span>allow<span> one-way flow in the direction of the heart.</span>
A document-based essay shows how the theme under discussion relates to the time period of your attention. The purpose of writing it is for you to study the documents your professor gave you to learn and communicate an important idea about history. The writing is evidence founded so it tends to prove a point and for that you need facts and details (option A).
All had territory under german control by the end of 1940.
<span>The fact that certain psychological effects appear to shrink over time is called the decline effect.
When something diminishes in power, or shrinks over time (like certain psychological effects in this case), it refers to the decline effect - it means that these is less of something, or it becomes weaker in power.</span>
Answer:
Using caravans created cultural diffusion between people
Using caravans allowed for easier movement of gold and salt
Using caravans allowed for the spread of Islam through trade
