Explanation:
because the pressure exerted by artery is more than that of vein due to its narrow lumen and thick walls...causing it difficult to clot.
Advances in science and technology can be affected by a number of factors such as:
<span>1) the values and attitudes of people within a society
2) the cultural backgrounds of scientists and engineers
3) the technological limitations of a society
4) the social and economic needs of a society</span>
