Four plumbers each charge a flat fee plus an hourly rate for repair visits. The table shows their total costs for repairs that required various amounts of time. Total Cost of Repairs
Hours needed for repair
Cost for plumber
A
Cost for plumber
B
Cost for plumber
C
Cost for plumber
D
1
$35
$55
$50
$50
2
$65
$75
$75
$60
3
$95
$95
$100
$70

Which plumber charges the greatest hourly rate?

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

step-by-step explanation: it is d

assuming this is from a math graphing problem.

7 would be on the x-axis which is the horizontal line on the graph

84 would be on the y-axis which is the vertical line on the graph