The population density of peru one year was approximately 23 people per square kilometer. brazil has a land area of approximately 8.5 million square kilometers.
if brazil had the same population density as peru that year, approximately how many people were living in brazil?
370,000 people2,700,000 people31,500,000 people195,500,000 people

we know that

The population density is equal to the number of people divided by the total area of the country

Let

x--------> the number of people

y-------> the total area of the country

Pd-----> the population density

in this problem we have

Find the number of people were living in Brazil that year

solve for x

substitute the values

therefore

the answer is

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

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.