Polygraph evaluations for principles of biomedical

we need additional information in order to determine the cause of death for anna garcia. there are at least 3 things with explanation included as to why we need them are as follows:

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

answerblank(1) epidermis; blank(2); dermis;