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Natural Science

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Submitted By YosefineVC
Words 1575
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2/13/2014

ECOLOGY: Terminology
• Greek oikos, meaning “household,” combined with the root logy, meaning “the study of.” • literally the study of households including the plants, animals, microbes, and people that live together as interdependent beings on Spaceship Earth.
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Ecological Concepts
Introduction to Natural Sciences

Ecology has been defined by the Ecological
Society of America (1993) as:

The Four Laws of Ecology
1. Everything is connected to everything else. 2. Everything must go somewhere. 3. Nature knows best. 4. There is no such thing as a free lunch.

• The scientific discipline that is concerned with the relationships between organisms and their past, present, and future environments. • These relationships include physiological responses of individuals, structure and dynamics of populations, interactions among species, organization of biological communities, and processing of energy and matter in ecosystems
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Nature consists of a number of systems called “spheres”:
• • • • • The atmosphere (air and what is in it) The hydrosphere (water in its liquid form) The lithosphere (land, rocks and below) The biosphere (all the living organisms) The anthroposphere (human system)

Anthroposphere
• The built environment (buildings, roads, and other infrastructure) • Agriculture (also called the Primary Sector) • The manufacturing industry (also called the Secondary Sector) • The service industry (also called the Tertiary Sector) • Energy production infrastructure (power plants).

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1

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Components of Ecosystem
A. Functional 1. Autotrophic 2. Heterotrophic B. Structural 1. Abiotic 2. Producent 3. Consument 4. Decomposer
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Includes also
• Materials (raw materials, processed materials, products, solid waste) • Energy consumption (fossil

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...Science[nb 1] is a systematic enterprise that creates, builds and organizes knowledge in the form of testable explanations and predictions about the universe.[nb 2][2]:58 Contemporary science is typically subdivided into the natural sciences which study the material world, the social sciences which study people and societies, and the formal sciences like mathematics. The formal sciences are often excluded as they do not depend on empirical observations.[3] Disciplines which use science like engineering and medicine may also be considered to be applied sciences.[4] During the middle ages in the Middle East, foundations for the scientific method were laid by Alhazen.[5][6][7] From classical antiquity through the 19th century, science as a type of knowledge was more closely linked to philosophy than it is now and, in fact, in the West the term "natural philosophy" encompassed fields of study that are today associated with science, such as physics, astronomy and medicine.[8]:3[nb 3] In the 17th and 18th centuries scientists increasingly sought to formulate knowledge in terms of laws of nature. Over the course of the 19th century, the word "science" became increasingly associated with the scientific method itself, as a disciplined way to study the natural world. It was in the 19th century that scientific disciplines such as physics, chemistry, and biology reached their modern shapes. The same time period also included the origin of the terms "scientist" and "scientific community...

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