Some countries in africa have a negative human population growth. this is most likely due to

The correct answer is high mortality rates due to AIDS.

Explanation:

The mortality rate is illustrated as the determination of entire deaths in a population of a specific area, with respect to the size of that population, in a given time unit. It has a negative influence on the growth of human population.  

In various parts of Africa, AIDS is a lethal health condition, as it exhibits lowered life expectancy of individuals and leads to many deaths.  

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.