Question

Although humanity has survived for more than 2 million years, the rapid and problematic rise in population that concerns the world today is a feature of the last ____ years.

a) 100
b) 500
c) 1,000
d) 10,000

Answer 1

The rapid and problematic rise in population that concerns the world today is a feature of the last 100 years. The correct option is A.

Step-by-step explanation:

The rapid and problematic rise in population that concerns the world today is a feature of the last 100 years. According to historical data, it took until about 1800 AD for the human population to reach 1 billion, but it took only a little over 100 years for the population to reach 2 billion.

The acceleration in growth rate continued, as it took only 24 years to add 2 billion people between 1975 and 1999. Despite projections of a decrease in the growth rate, the population continues to increase and the threat of overpopulation remains.