envi sci

• The Science that studies the environment is not a stand-alone field
• Environmental science studies the phenomena in the surroundings to include the sources, reactions, transport, cause and effect, and the impact of human activities to the biotic and abiotic elements in it
• Environment


  The surrounding external conditions influencing the development of growth of people, animals, plants, and other living organisms
• Definitions of environmental science by various authors

  • Boring: A person's environment is the sum total of the stimulation which he receives from his conception until his death. It comprises various types of forces such as physical, intellectual, economic, political, cultural, social, moral and emotional.
• The scope of environment includes the elements/components of the environment
• Science


  A process of producing empirical knowledge about the natural world through methodical and logical studies of nature
• Science depends on precise observation of natural phenomena
• The civilization of man depends on science and technology by understanding the world (science) and applying scientific knowledge (technology)
• Applications of science


  • Design learning environments that form future generations of producers and consumers of scientific and technological knowledge
  • Policy decisions and management practices for sustainability
  • Finding cure for diseases and other medical problems
  • Shaping human civilization
  • Developing technology
• Environmental science is an interdisciplinary field
• Environmental science


  The study of how elements in the global world or local environment interact, and how humans affect the environment, and vice-versa
• Environmental science studies climate change, conservation, biodiversity, water quality, groundwater contamination, soil contamination, use of natural resources, waste management, sustainable development, disaster reduction, air pollution, noise pollution, and many more
• Since most environmental issues are results of human activities, environmental science includes economics, law, and social sciences
• When studying climate change, different sciences like physics, chemistry, biology, meteorology, and oceanography work together to understand the problem
• Why we need to study environmental science

  • Give you the idea on how to make a consensus relationship with your surroundings that can benefit you and other living organisms
  • Our planet is the only place we have, we better know how to confront the issues and be part of the solution instead of creating another problem
  • Knowledgeable of your surroundings will help make a better decision
• The hydrosphere consists of water bodies such as oceans, lakes, rivers, groundwater, ice caps, glaciers, and atmospheric moisture
• Lithosphere - solid rocky outer layer of Earth
• Biosphere - all life forms on earth
• Atmosphere - gases surrounding Earth's surface
• The biosphere includes all living organisms on earth, including plants, animals, fungi, bacteria, viruses, protists, etc.
• Hydropower, also known as hydroelectric power, is generated by the force of moving water, typically from rivers or dams, to produce electricity.
• Wind energy is generated by harnessing the power of wind through wind turbines to produce electricity.
• carbon monoxide (CO): produced when fossil fuels burn without enough oxygen; can cause suffocation at high concentrations
• stratopause is between troposphere and stratosphere, boundary where temperature stops decreasing
• nitrogen oxides (NOx): formed through chemical reactions between nitrogen and oxygen in air pollution; contribute to acid rain formation
• Atmosphere - gaseous envelope surrounding the earth
• Solar energy is derived from the sun's radiation and can be converted into electricity or used for heating purposes.
• The atmosphere is the gaseous envelope surrounding Earth
• The atmosphere is composed mainly of nitrogen (78%), oxygen (21%), and trace amounts of other gases like carbon dioxide, argon, neon, helium, methane, krypton, hydrogen, xenon, and radon
• Hydrosphere - all water on or near Earth's surface
• Carbon dioxide (CO2): released during combustion of fossil fuels; contributes to global warming
• Douglas and Holland: It describes all external forces, influences and conditions, which affect the life, nature, behavior and growth, development and maturity of living organisms. 
• Jayanta Kumar Biswas (2018): It is the total set of surrounding; the ecological complex of physical, chemical and biological factors that can act upon an organism, population or an ecological community and ultimately determine its form, function, and survival.