Which surfaces of both lungs bear grooves that mark the positions of the great vessels and the heart

i do not know and i have a 100 in this class

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

other information encoded in your genes might distinguish you from the others in the group