If in a population the natality is 25 and mortality is 55, in a span of 10 years. What is the growth rate (GR) of that population?

Category: QuestionsIf in a population the natality is 25 and mortality is 55, in a span of 10 years. What is the growth rate (GR) of that population?
Editor">Editor Staff asked 2 months ago

If in a population the natality is 25 and mortality is 55, in a span of 10 years. What is the growth rate (GR) of that population?
 
(a) -3
 
(b) 100
 
(c) 28
 
(d) -38
 
I have been asked this question in a national level competition.
 
Enquiry is from Population Growth in portion Organisms and Populations of Biology – Class 12

1 Answers
Editor">Editor Staff answered 2 months ago

The correct answer is (a) -3
 
Explanation: As per the formula, GR =
Natality–Mortality
Unittime
=
25–55
10
= -3
 
The growth rate of the given area is -3 in 10 years.