Question 1

If a species of frog becomes threatened by a change in environmental conditions, the species would be considered a(n) ____________________.

Accepted Answer

The answer of If a species of frog becomes threatened...

Question 2

Most people do not understand why it is important for humans to be concerned about biodiversity when there are so many, seemingly more pressing issues.List three reasons why people should be interested in maintaining biodiversity and explain why each reason is important.

Accepted Answer

Biodiversity provides humans with food,

Question 3

In speciation, two species interbreed to form one new species.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is not true of the conditions on earth that make life possible?

Accepted Answer

A) gravitational mass keeps atmospheric gasses from flying off 
B) spin of the earth keeps the sun from overheating any one part of the planet 
C) balance of consumer and producer organisms keeps oxygen levels at correct level 
D) for last 2 billion years unreliable ozone levels have caused mutations 
E) distance from the sun keeps temperature in a narrow range 
A) gravitational mass keeps atmospheric gasses from flying off 
B) spin of the earth keeps the sun from overheating any one part of the planet 
C) balance of consumer and producer organisms keeps oxygen levels at correct level 
D) for last 2 billion years unreliable ozone levels have caused mutations 
E) distance from the sun keeps temperature in a narrow range

Question 5

Under rapidly changing environmental conditions it is better to be a specialist species.

Accepted Answer

A) True 
 B)False

Question 6

The fossils found so far probably represent about 50% of the species that have ever lived.

Accepted Answer

A) True 
 B)False

Question 7

For every shark that injures a person, humans kill at least 1 million sharks.

Accepted Answer

A) True 
 B)False

Question 8

Two-hundred-twenty-five million years ago, one super continent, called ____________________, was home to all terrestrial organisms.

Accepted Answer

The answer of Two-hundred-twenty-five million years ago, one super continent,...

Question 9

Keystone species have a large effect on the types and abundances of other species in an ecosystem.

Accepted Answer

A) True 
 B)False

Question 10

A tropical rain forest is likely to have high species evenness and low species richness.

Accepted Answer

A) True 
 B)False

Question 11

The number of different species an ecosystem contains is its

Accepted Answer

A) speciation 
B) species evenness 
C) species niche 
D) species richness 
E) habitat 
A) speciation 
B) species evenness 
C) species niche 
D) species richness 
E) habitat

Question 12

A species with a broad niche is considered a(n)

Accepted Answer

A) endemic species 
B) endangered species 
C) specialist species 
D) native species 
E) generalist species 
A) endemic species 
B) endangered species 
C) specialist species 
D) native species 
E) generalist species

Question 13

Biological evolution by natural selection is when genes ____, individuals ____, and populations ____.

Accepted Answer

A) evolve; mutate; are selected 
B) are selected; mutate; evolve 
C) mutate; evolve; are selected 
D) evolve; are selected; mutate 
E) mutate; are selected; evolve 
A) evolve; mutate; are selected 
B) are selected; mutate; evolve 
C) mutate; evolve; are selected 
D) evolve; are selected; mutate 
E) mutate; are selected; evolve

Question 14

Biodiversity includes all of the following components except

Accepted Answer

A) functional diversity 
B) genetic diversity 
C) intellectual diversity 
D) ecological diversity 
E) species diversity 
A) functional diversity 
B) genetic diversity 
C) intellectual diversity 
D) ecological diversity 
E) species diversity

Question 15

Use the Figure above, which represents the niche of the Panda and the raccoon, to answer the following question(s).
-Notice the letter D.It is pointing at a characteristic of this niche.What is this characteristic?

Accepted Answer

breadth of

Question 16

Charles Darwin is the only person who came up with the idea that organisms change over time and are descended from a common ancestor.

Accepted Answer

A) True 
 B)False

Question 17

Some individuals in a population have genetic traits that are favored by environmental conditions because the trait enhance their ability to survive and produce offspring, a process called

Accepted Answer

A) natural selection 
B) adaptability 
C) genetic drift 
D) mutation 
E) scientific theory 
A) natural selection 
B) adaptability 
C) genetic drift 
D) mutation 
E) scientific theory

Question 18

The world's cumulative body of discovered fossils is called the ____________________.

Accepted Answer

The answer of The world's cumulative body of discovered fossils...

Question 19

If you were talking to a fisherman on the west coast of the United States, how would you explain to him/her why it is important to release the unharmed sharks he catches in his nets?

Accepted Answer

Sharks remove sick, injured, and dead or

Question 20

Most mutations occur because of exposure to artificial external agents, such as radiation.

Accepted Answer

A) True 
 B)False

Exam 4: Biodiversity and Evolution

If a species of frog becomes threatened by a change in environmental conditions, the species would be considered a(n) ____________________.

Most people do not understand why it is important for humans to be concerned about biodiversity when there are so many, seemingly more pressing issues.List three reasons why people should be interested in maintaining biodiversity and explain why each reason is important.

In speciation, two species interbreed to form one new species.

Which of the following is not true of the conditions on earth that make life possible?

Under rapidly changing environmental conditions it is better to be a specialist species.

The fossils found so far probably represent about 50% of the species that have ever lived.

For every shark that injures a person, humans kill at least 1 million sharks.

Two-hundred-twenty-five million years ago, one super continent, called ____________________, was home to all terrestrial organisms.

Keystone species have a large effect on the types and abundances of other species in an ecosystem.

A tropical rain forest is likely to have high species evenness and low species richness.

The number of different species an ecosystem contains is its

A species with a broad niche is considered a(n)

Biological evolution by natural selection is when genes ____, individuals ____, and populations ____.

Biodiversity includes all of the following components except

Use the Figure above, which represents the niche of the Panda and the raccoon, to answer the following question(s). -Notice the letter D.It is pointing at a characteristic of this niche.What is this characteristic?

Charles Darwin is the only person who came up with the idea that organisms change over time and are descended from a common ancestor.

Some individuals in a population have genetic traits that are favored by environmental conditions because the trait enhance their ability to survive and produce offspring, a process called

The world's cumulative body of discovered fossils is called the ____________________.

If you were talking to a fisherman on the west coast of the United States, how would you explain to him/her why it is important to release the unharmed sharks he catches in his nets?

Most mutations occur because of exposure to artificial external agents, such as radiation.

Environmental Problems, Their Causes, and Sustainability

Science, Matter, Energy, and Systems

Ecosystems: What Are They and How Do They Work

Biodiversity, Species Interactions, and Population Control

The Human Population and Its Impact

Climate and Biodiversity

Aquatic Biodiversity

Sustaining Biodiversity: the Species Approach

Sustaining Terrestrial Biodiversity: the Ecosystem Approach

Sustaining Aquatic Biodiversity

Food, Soil, and Pest Management

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy

Energy Efficiency and Renewable Energy

Environmental Hazards and Human Health

Air Pollution

Climate Disruption and Ozone Depletion

Water Pollution

Solid and Hazardous Waste

Cities and Sustainability

Economics, Environment, and Sustainability

Politics, Environment, and Sustainability

Environmental Worldviews, Ethics, and Sustainability

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Biological evolution by natural selection is when genes , individuals , and populations .