\begin{tabular}{|c|c|c|c|c|}
\hline & Russia & Brazil & Nigeria & \begin{tabular}{l}
Global \\
avg.
\end{tabular} \\
\hline \begin{tabular}{l}
Population \\
growth rate
\end{tabular} & [tex]$-0.02 \%$[/tex] & [tex]$0.83 \%$[/tex] & [tex]$2.54 \%$[/tex] & [tex]$1.10 \%$[/tex] \\
\hline Fertility rate & 1.61 & 1.81 & 5.31 & 2.45 \\
\hline \begin{tabular}{l}
Life \\
expectancy
\end{tabular} & 70 years & 73 years & 52 years & 68 years \\
\hline
\end{tabular}

1. Which country is growing the fastest?
2. Which country is growing the slowest?
3. Which factor most likely contributes to Brazil's population growth rate?
4. Which factor most likely contributes to Nigeria's population growth rate?



Answer :

To determine the countries with the fastest and slowest population growth rates and the factors contributing to these rates, consider the provided data on population growth rates, fertility rates, and life expectancy.

1. Countries' Population Growth Rates:
- Russia: -0.02%
- Brazil: 0.83%
- Nigeria: 2.54%

Comparing these rates:
- Nigeria has the highest population growth rate of 2.54%.
- Russia has the lowest population growth rate of -0.02%.

2. Fastest Growing Country:
Nigeria is growing the fastest with a population growth rate of 2.54%.

3. Slowest Growing Country:
Russia is growing the slowest with a population growth rate of -0.02%.

4. Factor Contributing to Brazil's Population Growth Rate:
Brazil's population growth rate of 0.83% is moderately higher than the global average of 1.10%. Factors such as fertility rate and life expectancy can influence this. Considering:
- Fertility rate in Brazil is 1.81.
- Life expectancy in Brazil is 73 years.

Most likely factor: Moderate fertility rate and life expectancy likely contribute to Brazil's population growth rate. In particular, the fertility rate, while not extremely high, is sufficient to sustain population growth.

5. Factor Contributing to Nigeria's Population Growth Rate:
Nigeria has the highest population growth rate of 2.54%. Factors that can influence this include:
- High fertility rate of 5.31.
- Lower life expectancy of 52 years.

Most likely factor: The high fertility rate in Nigeria significantly contributes to its rapid population growth rate. Despite the lower life expectancy, the high number of births per woman ensures a large increase in population.

In summary:

- The fastest growing country is Nigeria.
- The slowest growing country is Russia.
- Factors contributing to Brazil's population growth rate: Moderate fertility rate.
- Factors contributing to Nigeria's population growth rate: High fertility rate.