ENV 101 Graded Exams
Environmental Science – (2026) Actual
Questions & Answers 100%
Guarantee Pass
SECTION I: INTRODUCTION TO ENVIRONMENTAL SCIENCE &
SUSTAINABILITY (Questions 1–20)
1. Environmental science is best defined as the
interdisciplinary study of:
Correct answer: A. How humans interact with and impact the
natural world
Rationale: Environmental science integrates physical,
biological, and social sciences to examine the interactions
between humans and the environment, as well as the impacts
of human activities on ecosystems and natural resources.
2. Sustainability refers to:
Correct answer: B. Meeting present needs without
compromising the ability of future generations to meet their
own needs
, Rationale: Sustainability is defined as development that
meets the needs of the present without compromising the
ability of future generations to meet their own needs. It
balances environmental, economic, and social considerations.
3. The three scientific principles of sustainability are:
Correct answer: Solar energy, biodiversity, and nutrient
cycling
Rationale: Life on Earth has sustained itself for billions of
years through its reliance on solar energy, biodiversity (the
variety of species and ecosystems), and nutrient cycling (the
circulation of chemicals from the environment through
organisms and back to the environment).
4. An ecological footprint is defined as:
Correct answer: The amount of biologically productive land
and water needed to supply a population with renewable
resources and absorb wastes
Rationale: The ecological footprint measures the average
environmental impact of populations by calculating the
biologically productive land and water area required to
provide the resources a population uses and to absorb the
wastes it generates.
5. The law of conservation of energy states that:
Correct answer: Energy cannot be created or destroyed, only
converted from one form to another
Rationale: Whenever energy is converted from one form to
another in a physical or chemical change, no energy is
, created or destroyed. This law applies to physical and
chemical changes but not to nuclear changes.
6. Environmental ethics is best defined as:
Correct answer: The moral relationship between humans
and the environment
Rationale: Environmental ethics is a branch of philosophy
that examines the moral relationship between humans and
the environment, including questions about our obligations
to other species, future generations, and the natural world.
7. An anthropocentric worldview:
Correct answer: Places human beings at the center of moral
consideration
Rationale: An anthropocentric worldview holds that humans
are the most important beings and that nature has value
primarily because it serves human needs and interests.
8. A biocentric worldview:
Correct answer: Values all living organisms equally
Rationale: A biocentric worldview extends moral
consideration to all living organisms, valuing them for their
own sake rather than solely for their usefulness to humans.
9. An ecosystem service is:
Correct answer: A benefit that humans derive from
ecosystems
Rationale: Ecosystem services are the benefits that humans
obtain from ecosystems, including provisioning services
, (food, water), regulating services (climate, flood control),
supporting services (nutrient cycling), and cultural services
(recreation, spiritual benefits).
10. The precautionary principle suggests that:
Correct answer: When an activity raises threats of harm to
human health or the environment, precautionary measures
should be taken even if some cause-and-effect relationships
are not fully established
Rationale: The precautionary principle is a strategy for
coping with possible risks where scientific understanding is
yet incomplete, emphasizing that lack of full scientific
certainty should not be used as a reason to postpone cost-
effective measures to prevent environmental degradation.
11. A sustainable society is one that:
Correct answer: Meets the current and future basic resource
needs of its people in a just and equitable manner without
compromising the ability of future generations to meet their
needs
Rationale: Sustainability requires balancing environmental
protection, economic development, and social equity to
ensure long-term human well-being.
12. Natural capital refers to:
Correct answer: The natural resources and ecosystem
services that support life and human economies
Rationale: Natural capital includes all the resources (air,
water, soil, minerals, biodiversity) and ecosystem services that
Environmental Science – (2026) Actual
Questions & Answers 100%
Guarantee Pass
SECTION I: INTRODUCTION TO ENVIRONMENTAL SCIENCE &
SUSTAINABILITY (Questions 1–20)
1. Environmental science is best defined as the
interdisciplinary study of:
Correct answer: A. How humans interact with and impact the
natural world
Rationale: Environmental science integrates physical,
biological, and social sciences to examine the interactions
between humans and the environment, as well as the impacts
of human activities on ecosystems and natural resources.
2. Sustainability refers to:
Correct answer: B. Meeting present needs without
compromising the ability of future generations to meet their
own needs
, Rationale: Sustainability is defined as development that
meets the needs of the present without compromising the
ability of future generations to meet their own needs. It
balances environmental, economic, and social considerations.
3. The three scientific principles of sustainability are:
Correct answer: Solar energy, biodiversity, and nutrient
cycling
Rationale: Life on Earth has sustained itself for billions of
years through its reliance on solar energy, biodiversity (the
variety of species and ecosystems), and nutrient cycling (the
circulation of chemicals from the environment through
organisms and back to the environment).
4. An ecological footprint is defined as:
Correct answer: The amount of biologically productive land
and water needed to supply a population with renewable
resources and absorb wastes
Rationale: The ecological footprint measures the average
environmental impact of populations by calculating the
biologically productive land and water area required to
provide the resources a population uses and to absorb the
wastes it generates.
5. The law of conservation of energy states that:
Correct answer: Energy cannot be created or destroyed, only
converted from one form to another
Rationale: Whenever energy is converted from one form to
another in a physical or chemical change, no energy is
, created or destroyed. This law applies to physical and
chemical changes but not to nuclear changes.
6. Environmental ethics is best defined as:
Correct answer: The moral relationship between humans
and the environment
Rationale: Environmental ethics is a branch of philosophy
that examines the moral relationship between humans and
the environment, including questions about our obligations
to other species, future generations, and the natural world.
7. An anthropocentric worldview:
Correct answer: Places human beings at the center of moral
consideration
Rationale: An anthropocentric worldview holds that humans
are the most important beings and that nature has value
primarily because it serves human needs and interests.
8. A biocentric worldview:
Correct answer: Values all living organisms equally
Rationale: A biocentric worldview extends moral
consideration to all living organisms, valuing them for their
own sake rather than solely for their usefulness to humans.
9. An ecosystem service is:
Correct answer: A benefit that humans derive from
ecosystems
Rationale: Ecosystem services are the benefits that humans
obtain from ecosystems, including provisioning services
, (food, water), regulating services (climate, flood control),
supporting services (nutrient cycling), and cultural services
(recreation, spiritual benefits).
10. The precautionary principle suggests that:
Correct answer: When an activity raises threats of harm to
human health or the environment, precautionary measures
should be taken even if some cause-and-effect relationships
are not fully established
Rationale: The precautionary principle is a strategy for
coping with possible risks where scientific understanding is
yet incomplete, emphasizing that lack of full scientific
certainty should not be used as a reason to postpone cost-
effective measures to prevent environmental degradation.
11. A sustainable society is one that:
Correct answer: Meets the current and future basic resource
needs of its people in a just and equitable manner without
compromising the ability of future generations to meet their
needs
Rationale: Sustainability requires balancing environmental
protection, economic development, and social equity to
ensure long-term human well-being.
12. Natural capital refers to:
Correct answer: The natural resources and ecosystem
services that support life and human economies
Rationale: Natural capital includes all the resources (air,
water, soil, minerals, biodiversity) and ecosystem services that
