B. New medicinal possibilities
C. High levels of biodiversity
D. Lower carbon dioxide levels
By looking at all of the topographic maps given, the profile that best shows the topography along the line AD is going to be the first graph. This is the one that shows the best contour line elevations that are in feet. <span />
The age of the Earth is around 4.6 billion years old
C: the italian peninsula
see this map:
Problem: 8x-6-8=4+2x
First Step: Combine like terms. First, do -6-8 which is -14. This will leave you with 8x-14=4+2x.
Second Step: Collect Like terms again. This will leave you with 8x-2x=4+14. One you add and subtract those, you will be left with 6x=18.
Third Step: Divide by 6 on both sides.
Fourth Step: You got your answer x=3