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In a population of 1000 individuals, 100 new individuals were born and 200 individuals died over the course of 1 year. Which equation shows how to calculate the population growth rate of this population?

A. [tex]$0.10 \times 0.20=0.02$[/tex]
B. [tex]$0.10-0.20=-0.10$[/tex]
C. [tex]$0.20-0.10=0.10$[/tex]
D. [tex]$0.20+0.10=0.30$[/tex]

Sagot :

Certainly! Let's break down the calculation of the population growth rate step-by-step:

1. Identify the initial population: We start with a population of 1000 individuals.

2. Determine the number of births and deaths over the year:
- Number of births: 100
- Number of deaths: 200

3. Calculate the birth rate: This is the proportion of births to the initial population.
- Birth rate = Number of births / Initial population
- Birth rate = [tex]\( \frac{100}{1000} = 0.1 \)[/tex]

4. Calculate the death rate: This is the proportion of deaths to the initial population.
- Death rate = Number of deaths / Initial population
- Death rate = [tex]\( \frac{200}{1000} = 0.2 \)[/tex]

5. Determine the population growth rate:
- Population growth rate is calculated as the difference between the birth rate and the death rate.
- Growth rate = Birth rate - Death rate
- Growth rate = [tex]\( 0.1 - 0.2 = -0.1 \)[/tex]

Thus, the correct calculation for the population growth rate is represented by equation B:
[tex]\[ 0.1 - 0.2 = -0.1 \][/tex]

So, the answer is B.