GEOG 1F90 Lecture Notes - Lecture 5: Industrial Revolution, Demographic Transition, Ester Boserup

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coffeemammoth127

11 Oct 2012

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Geography lecture 5: population geography talk about why populations decline and grow. Demography study the composition/characteristics of a population (age, sex, race) Population geographers want to know how and why people are distributed across space (why are they organized in that way) Slide 2: population density the number of people located in a defined area (i. e people per square meter) total number people by the total area. No country has its population distributed equally. Physiologic density is tied with agricultural land. The population is situates mainly along the valley and delta of the river nile. How are people distributed over the land. Different colours on the map give you different levels of population density and distribution looking at the history of the human race, where people migrated and began to build cities. What are the characteristics of the population. Distribution by sex and age (population pyramid)

Related Questions

The fish population P(t) in a lake is suddenly attacked by adisease that render the fish unable to reproduce. Assuming that thedeath rate of the fish is inversely proportional to the square rootof the fish population (i.e. k1 = Î²/â(P) where Î² is aconstant), perform the following tasks:

1. Write a differential equation that models the population offish as a function of time. Assume that the fish are infected bythe disease at t = 0 and define your constants.

2. Solve the differential equation with the initial condition thatP(0) = P0.

3. What is the half-life of the fish population?

4. If there were 900 fish initially, and 441 are left after 6weeks, how long does it take for all the fish to die? Assume thatthe disease was caused by radioactive waste dumped in the lake. Itis discovered that another population of fish, S(t), spontaneouslymutate into the original fish at a rate of k2 (per week) and neverdie. The population S(t) are born at a rate k3.

5. Draw a diagram that describes the life cycle of these twofish populations including your rate constants.

6. Write the differential equations describing the populationsof P(t) and S(t).

Express each of the following in scientific notation:

(a) 0.000851 g

(b) 38,041,430 (population of California)

(d) 313,914,040 (U.S. population)

harlequinsquirrel990

Estimate the number of people in the world who are suffering from the common cold on any given day. (Answers may vary. Remember that a person suffers from a cold for about a week, and assume that the average person catches a cold twice a year.) (The population of Earth is approximately 6 billion.)

GEOG 1F90 Lecture Notes - Lecture 5: Industrial Revolution, Demographic Transition, Ester Boserup

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