Question

In a population of 1000 individuals, 200 new individuals were born and 100 individuals died over the course of 1 year. Which equation shows how to calculate the population growth rate of this population?
A. 0.10 × 0.20 = 0.02
B. 0.10 – 0.20 = –0.10
C. 0.20 – 0.10 = 0.10
D. 0.20 + 0.10 = 0.30

Answer 1

Answer:

C

Explanation:

0.20-0.10=0.10

because the population was decreased

Answer 2

Answer:

Option C, 0.20 – 0.10 = 0.10

Explanation:

Total number of births taking place in an year is equal to 200.

Number of births per person is equal to

$\frac{200}{1000} = 0.2$

Total number of deaths happening in an year is equal to 100

Number of deaths per person is equal to

$\frac{100}{1000} = 0.1$

Net growth in population per person

Total number of births per person - total number of deaths per person

Substituting the given values in above equation, we get -

$0.20 -0.10 = 0.10$

Hence, option C is correct