Multiple Choice
Which element is more plentiful on Earth?
1. Intro to General Chemistry
Density
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Which of the following is a density-independent factor affecting population growth?
A
Predation
B
Competition for resources
C
Disease
D
Natural disasters
Verified step by step guidance1
Understand the concept of density-independent factors: These are factors that affect population size regardless of the population's density. They are typically abiotic factors such as weather, climate, and natural disasters.
Differentiate between density-dependent and density-independent factors: Density-dependent factors, such as predation, competition for resources, and disease, have effects that vary with the population density. In contrast, density-independent factors impact populations regardless of their size.
Identify examples of density-independent factors: Common examples include natural disasters like hurricanes, earthquakes, floods, and fires. These events can drastically reduce population sizes without regard to how many individuals are present.
Analyze the given options: Predation, competition for resources, and disease are all density-dependent factors because their impact increases with population density. Natural disasters, however, affect populations regardless of their density.
Conclude that natural disasters are a density-independent factor affecting population growth, as they can impact populations equally, whether they are large or small.
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