Unit Test — Unit test Answers

15 verified answers2 views
7

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
8

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
9

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
10

Which of the following environments is connected to ozone depletion?

A
indoor environment
B
outdoor environment
C
global environment
D
all of the above
11

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

Answer:

Extended drought reduces water availability (a key limiting factor). This lowers plant growth and primary productivity, reduces food and habitat for consumers, intensifies competition for remaining resources, and can raise mortality rates, ultimately decreasing carrying capacity and population size.

12

Which of the following species is an R-selected species?

A
Giant tortoises
B
Mosquitoes
C
Elephants
D
Redwoods
13

What types of health related issues might be associated with climate related factors?

Answer:

Student answers will vary. Possible answers include malaria, heat exhaustion, skin cancer, elevation sickness, heat stroke, frostbite, hyperthermia, and hypothermia.

14

A population distribution shows _______.

A
the distribution of age groups within a population
B
the amount of organisms in a unit area
C
the total number of organisms in a population
D
where and in what arrangement organisms are located
15

How do the biotic and abiotic limiting factors of an ecosystem determine its carrying capacity?

Answer:

Biotic and abiotic limiting factors determine the carrying capacity of an ecosystem by setting the maximum population size the environment can sustainably support. Abiotic factors include non-living resources like water, sunlight, and space, while biotic factors include living interactions such as food availability, predators, and competition. When these factors become limited, population growth slows or stops at the carrying capacity.

16

Orange trees planted in a grove or orchard would most likely fall in which category of population distribution?

A
even
B
random
C
clumped
D
density
17

Environmental pollution does not affect an individual’s health.

A
T
B
F
18

Paint and solvents pose no potential hazard to human health.

A
T
B
F
19

Which of the following is influenced only by heredity and not environmental factors?

A
obesity
B
diabetes
C
heart disease
D
muscular dystrophy
20

Environmental factors determine whether or not all genetic traits lead to health issues.

A
T
B
F

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