Question

What are the four factors that affect population growth ecology?

• A. Predation, competition, resource availability and habitat destruction
• B. Environmental changes, disease outbreaks, natural disasters and genetic mutations
• C. Immigration, emigration, predation and competition
• D. Birth rate, death rate, emigration and immigration

Hint:

• The four fundamental factors directly determining population change are often remembered by the acronym BIDE:
  • Births (add to population)
  • Immigration (add to population)
  • Deaths (subtract from population)
  • Emigration (subtract from population)
• Other ecological factors (like predation, resources, disease) influence these four primary rates.

Answer 1

The Correct Option is D

To solve the problem, we need to identify the four factors that affect population growth in ecology.

1. Understanding the Concepts:

- Birth Rate: The rate at which new individuals are born into a population, which increases population size.
- Death Rate: The rate at which individuals die in a population, which decreases population size.
- Immigration: The arrival of new individuals into a population from outside, which can increase population size.
- Emigration: The departure of individuals from a population, which can reduce population size.

2. Given Values:

The question asks for the four factors affecting population growth in ecology. The available options are:

• Option 1: Predation, competition, resource availability, and habitat destruction
• Option 2: Environmental changes, disease outbreaks, natural disasters, and genetic mutations
• Option 3: Immigration, emigration, predation, and competition
• Option 4: Birth rate, death rate, emigration, and immigration

3. Analyzing the Options:

The correct answer is Option 4, which lists the birth rate, death rate, immigration, and emigration as the primary factors that directly affect population growth.

Final Answer:

The four factors that affect population growth in ecology are: Birth rate, death rate, emigration, and immigration.