Why do you think humans have two sets of 23 chromosomes? (hint: where did each set come

Humans have 23 pairs of chromosomes because 23 chromosomes come from the father and the other 23 come from the mother, and thus humans end up with 46 chromosomes.

With 23 sets, you have two copies of each gene.

This is what happens in normal situations. However, in some cases during cell division, there could be more or less that 46 chromosomes.

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.