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.
<span>Both the populations of Drosophila seem to have the same gene for foraging behavior
Therefore, the </span><span>alternative hypothesis which is made far less likely by having three R and K lines, rather than one of each is:
</span><span>The difference between the R and K lines is the result of environmental differences in the food availability of their habitats.
</span>
Answer:
B,the variable that is changed and being tested
