When the AP Bio's range was shortened, i asked which part of your lecture will be included in the ch. 7 and 8. But i just noticed that the systems (endocrine system, digestive system, circulatory system, excretory system, immune system, nervous system) are not part of the natural selection and ecology. Which chapter they belong to? 

Also for the first seven lessons of the part 3, aren't they part of the unit 7, which is not coming out in the test this year