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Lecture 14 Study Questions on Human Population Growth and Demographic Shifts

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Lecture 14 Study Questions on Human Population Growth and Demographic Shifts

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Questions and Answers

What type of growth pattern is the human population currently undergoing?

Logistic growth

Negative growth

Arithmetic growth

Exponential growth (correct)

What is a demographic shift and how many phases does it consist of?

A shift in government policies with only one phase

A shift in population distribution with three phases

A shift in age structure with two phases

A shift in cultural practices with four phases (correct)

What industrial process is responsible for fixing N2 into a usable form?

Nitrogen fixation (correct)

Decomposition

Photosynthesis

Respiration

How do excess N and P enter waterways causing environmental issues?

By leaching (A) Signup and view all the answers

What does an ecological footprint measure?

The amount of land and resources required to support an individual's lifestyle (D) Signup and view all the answers

Why are invasive species problematic for ecosystems?

They reduce biodiversity and outcompete native species (C) Signup and view all the answers

What are two main factors that contribute to the rapid growth of the human population?

Improvements in healthcare and sanitation (B) Signup and view all the answers

Where do humans primarily obtain phosphates for fertilizer?

From organic matter decomposition (A) Signup and view all the answers

How do excess nitrogen (N) and phosphorus (P) enter waterways, leading to environmental issues?

Via runoff from agricultural activities (D) Signup and view all the answers

What is eutrophication, why is it a problem, and what are some examples of its effects?

Eutrophication is the enrichment of water with nutrients, leading to algae blooms, fish kills, and dead zones. (C) Signup and view all the answers

What are some human-induced forces that contribute to species extinction?

Deforestation and habitat destruction (D) Signup and view all the answers

Why is plastic pollution concerning, and what is the percentage of plastic actually recycled globally?

Plastic pollution causes harm to marine life and ecosystems, with only 10% of plastic globally recycled. (B) Signup and view all the answers