Why do scientists hypothesize that hemochromatosis fill the evolutionary gap between echinoderms and chordates?

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.

Wich level of organization includes all the other levels or organizations

The pie chart tracks the percentage of renewable energy that's being used in a particular community near the ocean. what are two advantages of using this type of graph for this particular data set?