Question

If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?

Answer 1

The dolphin's population growth is calculated by subtracting the death rate (0.5) from the birth rate (2.0) and then multiplying by the population size (100), resulting in a growth of 150 individuals.

Step-by-step explanation:

To calculate the dolphin's population growth, we apply the formula for population change, which is the birth rate minus the death rate, multiplied by the population size. In this case, the birth rate is 2.0, the death rate is 0.5, and the population size is 100. Therefore, the growth rate is (2.0 - 0.5) multiplied by 100.

Growth Rate = (Birth Rate - Death Rate) × Population Size

Growth Rate = (2.0 - 0.5) × 100

Growth Rate = 1.5 × 100

Growth Rate = 150

This means the dolphin's population is expected to increase by 150 individuals. Ecologists often examine these rates to assess the health of a population. A growth rate of 150 indicates that the population of dolphins is growing.

Answer 2

Dolphin's population growth is 0.015

Step-by-step explanation:

The birth rate of the population is B= 2.0 and the death rate is D = 0.5

The population size is N=100.

Hence, dolphin population growth is given by

`r=(B)/(N)-(D)/(N)\\\\r=(2)/(100)-(0.5)/(100)\\\\r=0.015`

Thus, dolphin's population growth is 0.015