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Environmental Science - Preliminary Examination Notes, Lecture notes of Environmental Science

In this file, it tackles the topics under: - Science and Environment - Environmental Jurisprudence - Environmental Impact Assessment - Matter, Energy and Life in Ecosystem - Resources

Typology: Lecture notes

2022/2023

Available from 08/30/2024

keith0210
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Environmental Science Prepared by: Keith Ferrariz / E1A
Prelim reviewer Date: 02/18/23
Maam Nimfa Marcelo
Environmental Science
Prepared by: Keith Ferrariz / E1A
Date: 02/18/23
Science and
Environment
Environmental Science
Deals with the study of our environment, either
globally or locally, and its living and non-living
components. It is interdisciplinary study that
examines the role of human on the earth. It uses
concepts and information from ecology,
chemistry, geology, engineering, economics,
politics, ethics, and philosophy.
Environment
Refers to all the things that surround us
Refers to all external conditions and factors that
affect living organisms
Goals of Environmental Science
1. To develop a sustainable world a world in which
the supply of food, water, clean air and other
resources can sustain human population
2. To study environmental problems and issues;
priorities regarding acceptable environmental
preservation of natural species and habitats;
freedom of nations to do as they please within
their own boundaries and issues on the quality of
life, fairness and ethics
Sustainable Development
Meeting our needs without preventing future
generations of humans and other species from
meeting their needs. We have the right to use the
earth’s resources and earth capital to meet our
needs but we have an obligation to pass on the
earth’s resources and services to future
generations in as good or better shape that these
conditions were passed on to us
Causes of Environmental and Resource Problems
1. Poverty
2. Rapid Population Growth
3. Failure of Economic and political system to
encourage Earth-sustaining forms of economic
development
4. Rapid and wasteful use of resources
Resource Management and Resource
Technology
Ecological Resources anything required by an
organism for normal maintenance, growth and
reproduction. Examples: habitat, food, and water
Economic Resources anything obtained from
the environment to meet human needs and
wants. Examples: transportation, communication,
manufactured goods, recreation
Types of Resources
Non-renewable resources that cannot be
replaced. They exist in fixed quantity.
Renewable that can be replaced or replenished.
Environmental Education
Is the process by which people develop
awareness, knowledge and concern to the
environment.
Preserving, conserving and utilizing the
environment for the present and future
generations.
Involves skills, motivations and commitments to
work together to solve current environmental
problems.
Goals of Environmental Education
1. Must develop in each citizen an awareness and a
sensitivity to the environment and its problems. It
must teach the students the knowledge,
understanding and skills needed to solve the
problems and must foster positive attitudes
towards the environment.
2. Must consider all aspects of the environment
natural & man-made, technological, social,
economic, political, cultural, aesthetic and
knowledge.
3. Must emphasize an enduring continuity, linking
actions of today to the consequences for
tomorrow & needed to think globally.
4. Must aid young citizens in developing a sense of
responsibility and commitment to the future and
prepare them to carry out the role in safeguarding
and improving the environment.
5. Teaches the students critical thinking and informs
them the true meaning of Environmental Science.
6. Molds the students into smug crusaders.
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Prelim reviewer Date: 02/18/

Ma’am Nimfa Marcelo

Environmental Science Prepared by: Keith Ferrariz / E1A

Science and

Environment

Environmental Science

  • Deals with the study of our environment, either globally or locally, and its living and non-living components. It is interdisciplinary study that examines the role of human on the earth. It uses concepts and information from ecology, chemistry, geology, engineering, economics, politics, ethics, and philosophy. Environment
  • Refers to all the things that surround us
  • Refers to all external conditions and factors that affect living organisms Goals of Environmental Science
  1. To develop a sustainable world – a world in which the supply of food, water, clean air and other resources can sustain human population
  2. To study environmental problems and issues; priorities regarding acceptable environmental preservation of natural species and habitats; freedom of nations to do as they please within their own boundaries and issues on the quality of life, fairness and ethics Sustainable Development
  • Meeting our needs without preventing future generations of humans and other species from meeting their needs. We have the right to use the earth’s resources and earth capital to meet our needs but we have an obligation to pass on the earth’s resources and services to future generations in as good or better shape that these conditions were passed on to us Causes of Environmental and Resource Problems
  1. Poverty
  2. Rapid Population Growth
  3. Failure of Economic and political system to encourage Earth-sustaining forms of economic development
  4. Rapid and wasteful use of resources Resource Management and Resource Technology
  • Ecological Resources – anything required by an organism for normal maintenance, growth and reproduction. Examples: habitat, food, and water
  • Economic Resources – anything obtained from the environment to meet human needs and wants. Examples: transportation, communication, manufactured goods, recreation Types of Resources
  • Non-renewable resources that cannot be replaced. They exist in fixed quantity.
  • Renewable that can be replaced or replenished. Environmental Education
  • Is the process by which people develop awareness, knowledge and concern to the environment.
  • Preserving, conserving and utilizing the environment for the present and future generations.
  • Involves skills, motivations and commitments to work together to solve current environmental problems. Goals of Environmental Education
  1. Must develop in each citizen an awareness and a sensitivity to the environment and its problems. It must teach the students the knowledge, understanding and skills needed to solve the problems and must foster positive attitudes towards the environment.
  2. Must consider all aspects of the environment – natural & man-made, technological, social, economic, political, cultural, aesthetic and knowledge.
  3. Must emphasize an enduring continuity, linking actions of today to the consequences for tomorrow & needed to think globally.
  4. Must aid young citizens in developing a sense of responsibility and commitment to the future and prepare them to carry out the role in safeguarding and improving the environment.
  5. Teaches the students critical thinking and informs them the true meaning of Environmental Science.
  6. Molds the students into smug crusaders.

Prelim reviewer Date: 02/18/

Ma’am Nimfa Marcelo

Environmental Science Prepared by: Keith Ferrariz / E1A United Nations Decade of Education for Sustainable Development (UNDESD) – 2005 - 2014

  • The National Environment Education Action Plan for Sustainable Development (NEEAP) – through the Environmental Management Bureau (EMB) the key elements are: o Poverty reduction o Social equity o Empowerment and Good Governance o Peace and solidarity o Ecology integrity Education for Sustainable aims to:
  • Create awareness of sustainable development issues
  • Enhance knowledge and understanding skills
  • Influence values and attitudes
  • Encourage more responsibilities behavior
  • Promote learning that leads to action The Millenium Development Goals and Targets (Millenium Declaration signed by 189 countries including 147 Heads of States in September
  • Goal 1: Eradicate poverty and hunger
  • Goal 2: Achieve Universal primary education
  • Goal 3: Promotes gender equality
  • Goal 4: Reduce child mortality
  • Goal 5: Improve maternal health
  • Goal 6: Combat HIV/AIDS malaria & other diseases
  • Goal 7: Ensure environmental sustainability
  • Goal 8: Develop a global partnership for development

Environmental

Jurisprudence

Environmental Legislation

  • Includes all laws pertaining to the management of natural resources and the regulation of the discharge of materials into the environment. - It is a set of legal rules addressed specifically to human activities that affect the quality of environment

Different Environmental Laws

A. Commonwealth Era (1936-1942)

1. Mining Act (Commonwealth Act. No. 137) - Prohibition on the improper disposal of min wastes and tailings 2. Anti-Dumping Law - Prohibits the dumping of wastes into any river B. After regaining independence (1946) 1. Republic Act (RA) 3931

  • First major legal declaration that pollution control was a policy. Passage of this law was in response to the emergence of more industries and urban areas. C. Martial Law Years (1972-1986)
  1. PD 984 – Pollution Control Law
  2. PD 1151 – Philippine Environment Policy
  3. PD 1152 – Philippine Environment Code
  4. PD 389 – Forestry Reform Code
  5. PD 463 – Mineral Resources Development Decree of 1974
  6. PD 984 (amended by Executive order 192) – Air and water quality management
  7. PD 1181 – Abatement, control & prevention of vehicular pollution & establishing the maximum allowable emissions of specific air pollutant
  8. PD 979 – Prohibits the discharge of oil, noxious liquid substances & other harmful substances into the country’s island & territorial waste
  9. PD 825 – Prohibits the improper disposal of garbage
  10. PD 856 – Known as Sanitation code
  11. PD 1096 – Known as National Building code D. Present Laws 1. Republic Act (RA) 6969 or the Toxic Substances & Nuclear Wastes Control Act of 1990
  • Prohibits the importation, storage or transport of toxic or nuclear wastes into or through

Prelim reviewer Date: 02/18/

Ma’am Nimfa Marcelo

Environmental Science Prepared by: Keith Ferrariz / E1A

  1. What information is needed?
  2. What are the resources needed for the study & what are available? Phase 2 – Identifying Potential Impacts
  3. What are the boundaries of potential impacts? a. Area affected b. Organisms or ecological function affected
  4. What is the range of potential impacts
  5. Which potential impacts are most significant? a. Violate laws or policies b. Cause major disruption to ecosystem c. Cause health risks, economic losses Phase 3 – Measuring Baseline Conditions & Predicting Significant Impacts
  6. Baseline Conditions (population, size, role of species, condition, interaction)
  7. Predictions (case studies)
  8. Estimation of Likelihood
  9. Summarizing Phase 4 – Evaluating Significant Findings
  10. How are the effects distributed among affected group?
  11. How well are goals achieved by the proposal?
  12. What is the overall social significance of the predicted ecological effects? Phase 5 – Considering Alternatives to the Proposed Action Phase 6 – Communication of Findings & Recommendation Phase 7 – Monitoring effects of action

Legal Framework of EIA

  • Originated from PD 1151 (Philippine Environmental Policy)
  • Declared on June 6, 1977 together with LOI no. 549 (establishment of an administrative system for EIA)

Four Significant Statements Under Phil.

Environmental Policy of 1997

  1. National Environmental Policy
  2. National Environmental Goal
  3. Right to a healthy environmental
  4. Environmental Impact System – is the comprehensive process of assessing the significance of the project or undertaking on the quality of the physical, biological & socio- economic environmental

Environmental Compliance Certificate

  • A document issued by the DENR or authorized representative certifying that: a. The proposed project or undertaking will not cause any negative environmental impact. b. The proponent has complied with all the requirements of the EIS system c. The proponent is committed to implement the project’s approved Environmental Management Plan

Matter, Energy and Life

in Ecosystem

Matter and Energy

  • Energy – ability to work
  • Kinetic – energy in motion
  • Potential – energy at rest

Components of an Ecosystem

Biotic (living) components

  • Producers – are called autotrophs. They manufacture their own food.
  • Consumers – are called heterotrophs. They cannot produce their own food. They feed on plants, wastes of other living things or remain of organisms.

Prelim reviewer Date: 02/18/

Ma’am Nimfa Marcelo

Environmental Science Prepared by: Keith Ferrariz / E1A

  1. Herbivores – consumers that eat plant products.
  2. Carnivores – consumers that eat animal products
  3. Omnivores – consumers that eat both plants & animal products.
  • Decomposers – are fungi & bacteria that convert organic compounds into inorganic forms which can be used again by living organisms. They get energy from wastes of plant’s & animals as well as from the dead bodies organisms. Abiotic (non-living) components
  • Light – aids in photosynthesis. Activities of plants (flowering), length of day & night (migration, nesting, hibernation of animals) are affected.
  • Temperature/climate – the effects of temperature on the absence or presence of animals in different habitat are varied. Other animals can survive in cold while others can live in hot temperature.
  • Soil – character of the soil determines largely the character of vegetation & types of animals that maintain themselves upon it. o Sandy – plants do not grow well because water goes rapidly through the spaces between o Clay – retains water before drying, it is sticky & not suitable for plant growth o Loam – good for agriculture & made up of particles of gravel sand & clay with the addition of humus o Silt – made up of very fine particles of soil or clay, deposited as sediments
  • Water – no organisms will survive without water. It comprises a large percent of the body tissue of organism. Water helps in the germination of seeds, transports substances in the body of plants & animals, aids in the erosion & breaking of rocks. Plant water requirements:
  1. Hydrophytes – plants that live in areas submerged in water
  2. Mesophytes – found in neither wet or dry environment
  3. Xerophytes – found in an almost waterless environment
  • Wind/air – removes water vapor surroundings the plant causing evaporation to take place. Air is 78% nitrogen, 21% oxygen and 1% other gases. Thermodynamics and Energy Transfer
  • Thermodynamics – deals with how energy is transferred in natural processes. It deals specifically with the relationship between heat, work, energy. Laws of Thermodynamics
  1. First law – energy may be transferred into a system. It maybe transformed from one form to another.
  2. Second law – with each successive energy transfer or transformation, less energy is available for work. Laws of Conservation of Matter & Energy
  • Matter and energy cannot be created nor destroyed but can be transformed or transferred from one form to another.
  • Food chains and food webs are responsible for the continuous flow of energy in the ecosystem. Food Chain
  • order of events in an ecosystem, where one living organism eats another organism, and later that organism is consumed by another larger organism.
  • The flow of nutrients and energy from one organism to another at different trophic levels forms a food chain. Food Web
  • shows the complex feeding relationships in an ecosystem.
  • The interconnectedness of how organisms are involved in energy transfer within an ecosystem is vital to understanding food webs and how they apply to real-world science.