AnswersFL-2001340-Environmental Science B-CRUnit Test

Unit Test — Unit test Answers

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21
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Which of the following is a societal benefit to the application of biotechnology?

A
increased crop production
B
development of resistant microorganisms
C
increased crop management
D
creation of new organisms
22
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Which of the following conditions would lead to a small population size?

A
a low birth to death ratio
B
a high birth to death ratio
C
immigration
D
large number of resources
23

How has increased energy use associated with scientific advancements affected society?

A
It has led to an increase of the concentration of atmospheric carbon dioxide.
B
It has led to an increase in hazardous wastes from mining operations.
C
It has led to global climate changes.
D
All of the above
24

The total number of organisms an ecosystem can support is its tolerance range.

A
T
B
F
25

What are the possible impacts on the limiting factors that determine population size of an extended period of lower than normal rainfall?

Answer not available
26

How does mining impact the environment?

A
It has a positive impact on the environment by permanently altering the ecosystem.
B
It has a positive impact on the environment by releasing chemicals into the environment.
C
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife.
D
It has a negative impact on the environment by providing new niches for wildlife to inhabit.
27

Medical technologies have allowed for _______.

A
decreased medical expenses
B
a shorter average life span
C
an increase in overall health
D
the eradication of all disease
28

Genetic engineering involves _______ to achieve desired results.

A
enzyme production
B
modifying products and processes
C
changing one organism into another
D
introducing traits into organisms
29

Compare the influence of genetic inheritance to environmental factors on individual health.

Answer not available
30

How does population density differ from population size?

Answer not available
31

Along with Louis Pasteur, what other scientist helped to disprove spontaneous generation?

A
Eli Germ
B
John Snow
C
Francesco Redi
D
Robert Koch
32

Natural resources are classified as renewable and nonrenewable. What is the difference between the two?

A
whether or not the resource exists in nature
B
whether or not the resource can be replaced
C
whether or not the resource dwindles in supply
D
whether or not the resource is useful to humans
33

Exposure to pesticides or industrial chemicals _______.

A
always has immediate and apparent side effects
B
decreases the risk of developing genetically influenced diseases
C
increases the risk of developing genetically influenced diseases
D
has no effect on the risk of contracting genetically influenced diseases
34

Biotechnology is the use of _______ to improve products and processes.

A
organisms
B
chemicals
C
computers
D
all of the above
35

Which factors that affect personal health are the most easily controlled?

A
genetic
B
environmental
C
lifestyle
D
global

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