Line Graph

Consider the following graph in which the birthrate and death rate of a country are given, and answer the two items that follow.

1. Looking at the graph, it can be inferred that from 1990 to 2010

  1. population growth rate has increased
  2. population growth rate has decreased
  3. growth rate of population has remained stable
  4. population growth rate shows no trend

2. With reference to the above graph, consider the following statements considering 1970 as base year:

  1. Population has stabilized after 35 years.
  2. Population growth rate has stabilized after 35 years. 
  3. Death rate has fallen by 10% in the first 10 years. 
  4. Birthrate has stabilized after 35 years.

Which of the above are the most logical and rational statements that can be made from the above graph?

  1. 1 and 2 only
  2. 1, 2 and 3
  3. 3 and 4
  4. 2 and 4

Answers

  1. B
  2. A

Population growth rate = birth rate - death rate

From 1990 to 2010, birth rate is decreasing and death rate is almost constant. So, population growth rate is decreasing.