Question

the following table gives the birth and death rates for 4 countries in 3 different years. find the net growth rate due to births and deaths (neglect immigration) in each of the 3 years for country a. based on these trends predict how the countrys population will change in the next 20 years.

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$$\begin{tabular}{|c|ccc|ccc|} \\hline & \\multicolumn{3}{c|}{birth rate/1000} & \\multicolumn{3}{c|}{death rate/1000} \\\\ country & 1980 & 1995 & 2019 & 1980 & 1995 & 2019 \\\\ \\hline a & 14.2 & 10.1 & 9.8 & 11.7 & 11.4 & 11.1 \\\\ b & 24.8 & 20.9 & 19.2 & 6.8 & 6.4 & 6.1 \\\\ c & 11.5 & 10.8 & 9.9 & 11.5 & 10.9 & 10.5 \\\\ d & 15.1 & 14.2 & 13.8 & 8.7 & 8.8 & 8.1 \\\\ \\hline \\end{tabular}$$

country as net growth rate in 1980 was 2.5 per 1000.
(type an integer or a decimal.)

country as net growth rate in 1995 was -1.3 per 1000.
(type an integer or a decimal.)

country as net growth rate in 2019 was -1.3 per 1000.
(type an integer or a decimal.)

choose the best prediction about country as future population based on the general trends in these 3 years.
a. the countrys population will increase.
b. the countrys population will remain the same.
c. the countrys population will decrease.

Explanation:

Calculate net growth rate for 1980

Using the Net Growth Rate knowledge point

$$ \text{Net Growth Rate}_{1980} = \text{Birth Rate}_{1980} - \text{Death Rate}_{1980} = 14.2 - 11.7 = 2.5 $$

Calculate net growth rate for 1995

Using the Net Growth Rate knowledge point

$$ \text{Net Growth Rate}_{1995} = \text{Birth Rate}_{1995} - \text{Death Rate}_{1995} = 10.1 - 11.4 = -1.3 $$

Calculate net growth rate for 2019

Using the Net Growth Rate knowledge point

$$ \text{Net Growth Rate}_{2019} = \text{Birth Rate}_{2019} - \text{Death Rate}_{2019} = 9.8 - 11.1 = -1.3 $$

Predict future population trend

Based on the calculated net growth rates, Country A's net growth rate was positive in 1980 (\(2.5\)), but became negative in 1995 (\(-1.3\)) and remained negative in 2019 (\(-1.3\)). Since the net growth rate is negative, the death rate exceeds the birth rate, which means the population is declining. Therefore, the country's population will decrease over the next 20 years.

Answer:

Question 1

Country A's net growth rate in 1980 was 2.5 per 1000.

Question 2

Country A's net growth rate in 1995 was -1.3 per 1000.

Question 3

Country A's net growth rate in 2019 was -1.3 per 1000.

Question 4

• A. The country's population will increase.
• B. The country's population will remain the same.
• C. The country's population will decrease. (Correct answer)