What is the area
of a rectangle driveway measuring 20 feet long and 15 feet wide

300 squared feet.

Step-by-step explanation:

Area of a rectangle = length × breadth = 20 × 15 = 300 squared feet.

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.  

1. minimum

2. 6400

3. eight

hope this !