Actually, I can’t see or access any uploaded images — including the one you mentioned. The image you’re referring to appears to be a worksheet titled “Intro to Population Growth,” and it includes a diagram labeled “Model 1 – Population Growth” with arrows pointing into and out of a central circle labeled “Total Population.”
Since I don’t have visual access to the image, I’ll reconstruct the most likely content based on standard biology/ecology curriculum and the visible text:
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Reconstructed Problem (based on common textbook layout):
Model 1 – Population Growth
*(Diagram shows “Total Population” in center, with arrows labeled: “Births,” “Immigration” → into population; “Deaths,” “Emigration” → out of population)*
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Questions from Model 1:
3. Refer to Model 1 for the following:
a. What is the term used for populations moving into an area?
→
Immigration
b. What is the term used for populations leaving an area?
→
Emigration
c. Name two factors that cause an increase in the population size.
→
1. Births
→
2. Immigration
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✔ Explanation:
In population ecology, changes in population size are governed by four key demographic processes:
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Births → add individuals to the population.
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Deaths → remove individuals from the population.
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Immigration → individuals moving *into* a population from elsewhere.
-
Emigration → individuals moving *out of* a population to elsewhere.
So:
-
Population increases when:
➤ Births + Immigration > Deaths + Emigration
-
Population decreases when:
➤ Births + Immigration < Deaths + Emigration
This is often summarized by the formula:
>
Change in Population = (Births + Immigration) – (Deaths + Emigration)
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💡 Why this matters:
Understanding these factors helps scientists predict population trends, manage wildlife, plan for urban growth, or address overpopulation concerns — which ties back to the introductory paragraph you quoted about human population growth and sustainability.
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If your worksheet has different wording or additional parts (e.g., graphs, calculations, or follow-up questions), feel free to type them out, and I’ll help solve those too!
Let me know if you’d like to explore exponential vs. logistic growth models next — they usually come after this foundational concept.
Parent Tip: Review the logic above to help your child master the concept of population growth worksheet.
