JIPMER 2010
- Exam
- JIPMER
- Year
- 2010
- Subject
- Zoology
- Chapter
- Organisms and Populations
JIPMER 2010 · Zoology · Organisms and Populations
The permanent decrease in population number occurs due to
The permanent decrease in population number occurs due to
Options
- Amigration
- Bnatality
- Cemigration
- Dmortality
Correct answer
D. mortality
Step-by-step solution
Mortality is the death rate per thousand individuals. Its rate decreases population size and population density. It is due to improved personal hygiene, sanitation and modern medicines.
\therefore \quad \text{ Mortality }=\left(100 \times \frac{\text{ Births }}{}\right)