Two Equations Are Often Used to Describe Population Growth

question 229

Multiple Choice

Two equations are often used to describe population growth: What is the difference between the solutions of these two equations, N_t and ∆N?

• A) N_t is the total population at time t; ∆N is the change in population over a time period.
• B) N_t is the change in population over a time period; ∆N is the total population at time t.
• C) Both show changes in population size, but only N_t represents a population growth rate.
• D) Both show changes in population size, but they are based on different time intervals.
• E) Both show changes in population size, but they are based on different starting population sizes.

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Definitions:

Photochemical Smog

A type of air pollution created when sunlight reacts with nitrogen oxides and at least one volatile organic compound in the atmosphere.

Volatile Organic Compounds

Organic chemicals that have a high vapor pressure at ordinary room temperature, making them significantly evaporative and potentially harmful to the environment and human health.

Sunlight

The natural light emitted by the Sun, providing energy that supports the majority of life on Earth through photosynthesis.

Primary Pollutant

A contaminant released directly into the atmosphere from identifiable sources, contributing directly to air pollution.