Explain why the existence of an arch in the foot is described as an important advantage for a primate that always walks erect on two legs

The type of bond found in many carbon-to-carbon bonds in canola oil but very few carbon-to-carbon bonds in butter, is ; c=cc-c c=c c=h c-h hope this .

In some developing nations the percentage of the animal protein from fish in the diet can be as high as 25 percent.  about 85% of fish caught is used for human consumption.  the remainder is converted into fishmeal and fish oil.