Lecture 8

Question 1

What has caused the increase in the changes of growth rate across time

Answer 1

8000 BC —> First agricultural revolution
18th Century –> Industrial Revolution
20th and 21st century —>
a) Modern science and commence
b) Better access to food and science
c) Better understanding to human health and disease
d) Improvements to public health (Sewer systems)
e) Reduced death rates

Question 2

What are two key changes needed to increase world population

Answer 2

a) Increased longeitivty

b) Decreased infant mortality

Question 3

If Life expectancy is 40, how many generations will be alive at one time

Answer 3

2

Question 4

If Life expectancy is 60, how many generations will be alive at one time

Answer 4

3

Question 5

If Life expectancy is 80, how many generations will be alive at one time

Answer 5

4

Question 6

Do all biological organisms have a chance to grow at an exponential rate?

Answer 6

yes

Question 7

If all biological organisms have a chance to grow at an exponential rate, why don’t they?

Answer 7

Because there is typically some type of limiting factor that restricts the growth

Question 8

What is the Crude Birth Rate or CBR

Answer 8

The number of births per 1000 people in a given population in a year

Question 9

What is the Crude Death Rate or CDR

Answer 9

The number of deaths per 1000 people in a given population in a year

Question 10

How do we calculate natural increase?

Answer 10

(CBR - CDR) / 10

Question 11

Do more or less developed countries have higher death rates and why

Answer 11

More developed countries do because they have a high rate of older people