Unit 4 Test

Question 1

Exponential growth rates when graphed produce what shape curve?

Answer 1

J

Question 2

The number or biomass of a species that can be supported in a certain area without depleting resources is called?

Answer 2

carrying capacity (K)

Question 3

Organisms such as flies that have a high reproductive rate to overcome high mortality rates are?

Answer 3

r-selected species

Question 4

Name a biotic factor.

Answer 4

disease causing bacteria

Question 5

Interspecific interactions occur

Answer 5

between species

Question 6

What is the growth rate formula

Answer 6

(B+I)-(D+E)

Question 7

Name a country that is most likely to experience negative population growth.

Answer 7

Lithuania (Eastern Europe)

Question 8

Stress related diseases in a population are?

Answer 8

Density dependant

Question 9

The minimum viable population size is the population size required to prevent…

Answer 9

Species extinction

Question 10

Every second, ___ children are born and __ adults die.

Answer 10

5 and 2

Question 11

Who argued that population growth is the ultimate cause of many of the world’s social and environmental problems?

Answer 11

Thomas Malthus

Question 12

If the annual growth rate of the US population is 1% and it continues to grow at this rate for one year, about how many people would be added

Answer 12

3 x 10^6

Question 13

What area of the world is experiencing the highest fertility rate?

Answer 13

Africa

Question 14

What area of the world has the largest percentage of the global population?

Answer 14

Asia

Question 15

What area of the world consumes the largest amount of global resources per capita?

Answer 15

North America

Question 16

In the year 2010, a country had a population of 10 million people, a birth rate of 7.2 and a death rate of 2.2. If the birth and death rates remain constant, the population will be close to 40 million in what year?

Answer 16

Rule of 70 says: 70 over (7.2-2.2) = 14 years to double
2010 = 10 million
2024 = 20 million
2038 = 40 million

Question 17

When compared to most developed countries, most developing countries have higher what?

Answer 17

Infant mortality rates

Question 18

Name a density independent population control factor.

Answer 18

Habitat destruction

Question 19

Of the following, the factor most directly responsible for the growth of the human population in the past 100 years is?

Answer 19

Improved medical care and sanitation

Question 20

Replacement level fertility in a developed nation is likely to be nearest?

Answer 20

2.1

Question 21

Rachel Carson is to DDT as…

Answer 21

Roland and Molina are to CFC’s

Question 22

Name an animal in which the extinction of would be devastating to life on Earth.

Answer 22

The honeybee

Question 23

Currently, the country with the highest population is ____ and the second highest is ____.

Answer 23

China and India

Question 24

The TFR is the number of children born…

Answer 24

To one woman in her lifetime

Question 25

In the last 100 years, the average life expectancy of a world citizen has increased by over ____ years.

Answer 25

30

Question 26

In Africa, ____ has reduced the population by more that 25%.

Answer 26

AIDS

Question 27

The size and isolation of an island will have the greatest effect on its?

Answer 27

Species diversity

Question 28

In general, what percentage of energy is transferred from one trophic level to the next?

Answer 28

10%

Question 29

What is not an ecosystem service provided by forests?

Answer 29

Road construction

Question 30

In what year did the world population first reached 1 billion people?

Answer 30

1800

Question 31

As a developing country goes high birth and death rates to low birth and death rates, the pattern is known as what?

Answer 31

Demographic transition