Ohio State Environmental Science 2100 Introduction to
Environmental Science 2027 – Ecosystem Services and
Sustainability Metrics
ABSTRACT
This comprehensive question bank has been developed for students preparing for the
Environmental Science 2100 (Introduction to Environmental Science) Final Examination
at The Ohio State University during the 2027 academic year. ENR 2100 is a 3-credit
General Education Natural Science course offered through the School of Environment
and Natural Resources that examines the interrelationships between humans and the
environment, covering Earth systems, biodiversity, natural resources, sustainability, water
and atmospheric sciences, and environmental literacy . The 200 multiple-choice
questions are organized into eight major content areas aligned with the official course
curriculum: Ecosystem Services Fundamentals (25 questions), Provisioning & Regulating
Services (25 questions), Cultural & Supporting Services (25 questions), Sustainability
Concepts & Frameworks (25 questions), Sustainability Metrics & Indicators (30
questions), Ohio State Sustainability Initiatives (25 questions), Environmental Footprints
& Planetary Boundaries (25 questions), and Ecosystem Services Valuation & Policy (20
questions). Each question includes a detailed Rationale emphasizing ecosystem service
categories, sustainability measurement approaches, and practical applications essential
for understanding the benefits humans derive from nature and how sustainability is
quantified . This resource aligns with the 2026/2027 course objectives, which include
understanding the interdependence of scientific and technological developments,
recognizing social and philosophical implications of scientific discoveries, and describing
relationships between science and societal decision-making pertaining to sustainability .
SECTION A: ECOSYSTEM SERVICES FUNDAMENTALS (Questions 1-
25)
1. What is the best definition of ecosystem services?
,A) The economic value of natural resources
B) The direct and indirect contributions ecosystems provide for human wellbeing and
quality of life
C) The biodiversity found within an ecosystem
D) The total biomass produced by an ecosystem
Answer: B
Rationale: Ecosystem services are the direct and indirect contributions ecosystems
(natural capital) provide for human wellbeing and quality of life. This includes practical
benefits like food and water as well as cultural aspects such as reducing stress and
anxiety .
2. Which of the following is NOT one of the four main categories of ecosystem
services?
A) Provisioning services
B) Regulating services
C) Economic services
D) Cultural services
Answer: C
Rationale: The four main categories of ecosystem services are provisioning, regulating,
cultural, and supporting services. Economic services is not a formal category, though
economic valuation is a method used to assess ecosystem services .
3. What is the Millennium Ecosystem Assessment?
A) A global assessment of ecosystem change and its impact on human well-being
B) A U.S. government agency for environmental protection
C) A university research program
D) A United Nations treaty organization
Answer: A
Rationale: The Millennium Ecosystem Assessment (2005) was a landmark global
assessment that defined ecosystem services and distinguished four categories:
supporting, provisioning, regulating, and cultural services .
,4. What is natural capital?
A) The financial value of land
B) The world's stocks of natural assets including geology, soil, air, water, and all living
things
C) The total economic output of natural resource industries
D) The amount of renewable energy available
Answer: B
Rationale: Natural capital refers to the world's stocks of natural assets which include
geology, soil, air, water, and all living things. Ecosystem services flow from natural
capital .
5. Why is biodiversity important for ecosystem services?
A) It provides the foundation that underpins all ecosystem services
B) It only affects cultural services
C) It has no relationship to ecosystem services
D) It only affects provisioning services
Answer: A
Rationale: Biodiversity underpins all ecosystem services. It provides the foundation for
ecosystem functioning and resilience, supporting the delivery of provisioning,
regulating, cultural, and supporting services .
6. What is the relationship between ecosystem services and human well-being?
A) Ecosystem services have no relationship to human well-being
B) Ecosystem services lead to benefits in security, goods and materials, health, and
wellbeing
C) Ecosystem services only affect economic well-being
D) Ecosystem services only affect physical health
, Answer: B
Rationale: The services provided by ecosystems lead to benefits received by humans in
the form of security, goods and materials, health and wellbeing .
7. Which category of ecosystem services forms the basis for the other three
categories?
A) Provisioning services
B) Regulating services
C) Cultural services
D) Supporting services
Answer: D
Rationale: Supporting services, such as nutrient cycling, soil formation, and habitat
provision, form the basis for the other three types of services. Ecosystems could not
function without supporting services .
8. What is the IPBES framework for ecosystem services?
A) It supersedes the Millennium Ecosystem Assessment classification with "Nature's
Contributions to People"
B) It is identical to the MA classification
C) It only recognizes provisioning services
D) It rejects the concept of ecosystem services
Answer: A
Rationale: IPBES (Intergovernmental Science-Policy Platform on Biodiversity and
Ecosystem Services) has superseded the MA classification with the framework of
"Nature's Contributions to People" (NCP). This change recognizes that many services fit
into more than one category .
9. What is an example of a provisioning service?
Environmental Science 2027 – Ecosystem Services and
Sustainability Metrics
ABSTRACT
This comprehensive question bank has been developed for students preparing for the
Environmental Science 2100 (Introduction to Environmental Science) Final Examination
at The Ohio State University during the 2027 academic year. ENR 2100 is a 3-credit
General Education Natural Science course offered through the School of Environment
and Natural Resources that examines the interrelationships between humans and the
environment, covering Earth systems, biodiversity, natural resources, sustainability, water
and atmospheric sciences, and environmental literacy . The 200 multiple-choice
questions are organized into eight major content areas aligned with the official course
curriculum: Ecosystem Services Fundamentals (25 questions), Provisioning & Regulating
Services (25 questions), Cultural & Supporting Services (25 questions), Sustainability
Concepts & Frameworks (25 questions), Sustainability Metrics & Indicators (30
questions), Ohio State Sustainability Initiatives (25 questions), Environmental Footprints
& Planetary Boundaries (25 questions), and Ecosystem Services Valuation & Policy (20
questions). Each question includes a detailed Rationale emphasizing ecosystem service
categories, sustainability measurement approaches, and practical applications essential
for understanding the benefits humans derive from nature and how sustainability is
quantified . This resource aligns with the 2026/2027 course objectives, which include
understanding the interdependence of scientific and technological developments,
recognizing social and philosophical implications of scientific discoveries, and describing
relationships between science and societal decision-making pertaining to sustainability .
SECTION A: ECOSYSTEM SERVICES FUNDAMENTALS (Questions 1-
25)
1. What is the best definition of ecosystem services?
,A) The economic value of natural resources
B) The direct and indirect contributions ecosystems provide for human wellbeing and
quality of life
C) The biodiversity found within an ecosystem
D) The total biomass produced by an ecosystem
Answer: B
Rationale: Ecosystem services are the direct and indirect contributions ecosystems
(natural capital) provide for human wellbeing and quality of life. This includes practical
benefits like food and water as well as cultural aspects such as reducing stress and
anxiety .
2. Which of the following is NOT one of the four main categories of ecosystem
services?
A) Provisioning services
B) Regulating services
C) Economic services
D) Cultural services
Answer: C
Rationale: The four main categories of ecosystem services are provisioning, regulating,
cultural, and supporting services. Economic services is not a formal category, though
economic valuation is a method used to assess ecosystem services .
3. What is the Millennium Ecosystem Assessment?
A) A global assessment of ecosystem change and its impact on human well-being
B) A U.S. government agency for environmental protection
C) A university research program
D) A United Nations treaty organization
Answer: A
Rationale: The Millennium Ecosystem Assessment (2005) was a landmark global
assessment that defined ecosystem services and distinguished four categories:
supporting, provisioning, regulating, and cultural services .
,4. What is natural capital?
A) The financial value of land
B) The world's stocks of natural assets including geology, soil, air, water, and all living
things
C) The total economic output of natural resource industries
D) The amount of renewable energy available
Answer: B
Rationale: Natural capital refers to the world's stocks of natural assets which include
geology, soil, air, water, and all living things. Ecosystem services flow from natural
capital .
5. Why is biodiversity important for ecosystem services?
A) It provides the foundation that underpins all ecosystem services
B) It only affects cultural services
C) It has no relationship to ecosystem services
D) It only affects provisioning services
Answer: A
Rationale: Biodiversity underpins all ecosystem services. It provides the foundation for
ecosystem functioning and resilience, supporting the delivery of provisioning,
regulating, cultural, and supporting services .
6. What is the relationship between ecosystem services and human well-being?
A) Ecosystem services have no relationship to human well-being
B) Ecosystem services lead to benefits in security, goods and materials, health, and
wellbeing
C) Ecosystem services only affect economic well-being
D) Ecosystem services only affect physical health
, Answer: B
Rationale: The services provided by ecosystems lead to benefits received by humans in
the form of security, goods and materials, health and wellbeing .
7. Which category of ecosystem services forms the basis for the other three
categories?
A) Provisioning services
B) Regulating services
C) Cultural services
D) Supporting services
Answer: D
Rationale: Supporting services, such as nutrient cycling, soil formation, and habitat
provision, form the basis for the other three types of services. Ecosystems could not
function without supporting services .
8. What is the IPBES framework for ecosystem services?
A) It supersedes the Millennium Ecosystem Assessment classification with "Nature's
Contributions to People"
B) It is identical to the MA classification
C) It only recognizes provisioning services
D) It rejects the concept of ecosystem services
Answer: A
Rationale: IPBES (Intergovernmental Science-Policy Platform on Biodiversity and
Ecosystem Services) has superseded the MA classification with the framework of
"Nature's Contributions to People" (NCP). This change recognizes that many services fit
into more than one category .
9. What is an example of a provisioning service?
