
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Transcribed Image Text:**Population and Limiting Factors Worksheet**
### Completion Exercise
Use each of the terms below only once to complete the passage.
- carrying capacity
- density dependent
- density independent
- growth rate
- population density
- randomly
- spatial distribution
Some characteristics that all populations have include (1) __________, (2) __________, and (3) __________. Populations tend to be dispersed (4) __________, uniformly, and in clumps. Populations also tend to stabilize near the (5) __________ of their environment. Factors that limit populations are either (6) __________ or (7) __________.
### Table: Population-Limiting Factors
Complete the table by checking the correct column(s) for each description.
| Description | Density Dependent | Density Independent |
|------------------------------------------|-------------------|---------------------|
| 8. Earthquake-related tsunami | | |
| 9. Intense competition for a food source | | |
| 10. Influenza epidemic | | |
| 11. Flooding due to a hurricane | | |
| 12. Change in the number of predators | | |
### True or False Statements
13. Population-limiting factors keep a population from increasing indefinitely.
14. Density-independent factors include parasites and disease.
15. On Isle Royale, the population of moose decreased as the population of wolves decreased.
16. Competition can occur within a species or between two different species.
---
**Instructions for Educational Use:**
- **Fill in the blanks** in the passage using the terms provided to understand the basic characteristics of populations.
- **Complete the table** by identifying whether the factors listed are density dependent or density independent.
- **Assess the statements** for truthfulness and make corrections as needed for clarification on population-limiting factors.
This worksheet helps in understanding how various factors affect populations in ecosystems and how they interact to stabilize or destabilize population numbers.
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