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exis [7]
3 years ago
6

How could the adaption of valves in leg vains allow a human to better survive in its environment.

Social Studies
1 answer:
Yuri [45]3 years ago
3 0
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>
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<h3>What is the effect of Asia's geography on Asia?</h3>

Asians have been heavily influenced by the water forms in Asia because it has determined their settlement patterns. For instance, most Asians live in settlements that are close to water sources such as rivers and oceans.

The economic activities have also been influenced as Asians around water engage in activities such as fishing and farming like on the Yangtze river.

Landforms have had the same effect as people settled in areas that were kinder to human settlement. For instance, the Chinese avoided areas with deserts and the Japanese avoided the mountains that populate Japan.

Find out more on the impact of geography on settlement at brainly.com/question/14763321

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