Answer:
Heres a link to a labeled diagram of the heart. Sorry I was trying to put a picture in but It wouldn't save as a JPEG file
Link:
https://www.google.com/url?sa=i&source=images&cd=&ved=2ahUKEwjpw8LI4vzlAhVMPn0KHWHnCTkQjRx6BAgBEAQ&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FFile%3ADiagram_of_the_human_heart_(cropped).svg&psig=AOvVaw2LsD24TXBtoTcH1kjWCRJC&ust=1574476068782790
The answer is <span>Position emission tomography (PET). The nuclear imaging procedure in medicine is able to detect even molecular activities in a cell. They are
therefore effective in detecting cancers, cardiovascular
diseases, neurological disorders, and etcetera. The radionuclides are modeled
such that they accumulate in the targeted organ. They measure sugar (glucose)
metabolism, blood flow, and oxygen utilization.
</span>
Because it starts out as one cell
Ecological diversity is the correct answer hoped I helped :)
A. Yes is correct !
Hope that helps