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>
Answer:
Sparta was ruled by two kings, who ruled until they died or were forced out of office. Athens was ruled by archons, who were elected annually. Thus, because both parts of Athens' government had leaders who were elected, Athens is said to have been the birthplace of democracy. Spartan life was simple.
Answer:
The giant family of the sun including olabets, asteroids,comets etc is called solar system.Solar system is composed of the sun and the heavenly bodies in the gravitational field of sun.The diameter of solar system is 1.87 light years.The solar system of located in Milky way galaxy.
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Answer:
Population growth in the eastern states.
Availability of cheap, fertile land.
Economic opportunity, e.g., gold (California Gold Rush), logging, farming, freedom (for runaway slaves)
new life
more food
Explanation:
Answer:
The Battle of Thermopylae was fought between an alliance of Greek city-states, led by King Leonidas I of Sparta, and the Achaemenid Empire of Xerxes I. It was fought over the course of three days, during the second Persian invasion of Greece.
Explanation:
