Energia, Medi Ambient i Patrimoni Natural a Catalunya

Producció Energètica a Catalunya

L’energia és la capacitat d’un sistema per produir accions externes, és a dir, qualsevol acció que provoqui un canvi. En última instància, gairebé tota l’energia que utilitza la humanitat a la Terra té el seu origen en el sol.

La disponibilitat d’energia és essencial per al funcionament de l’economia d’un país i un indicador del seu grau de desenvolupament. Catalunya és un país dependent energèticament, ja que només produeix el 32% del total de l’energia

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Understanding Ecological Disturbances: Types, Impacts, and Factors

Ecological Disturbances: An Overview

Disturbance: A relatively discrete event in time, causing a disruption in ecosystems, changing the substrate and availability of resources, and creating opportunities for the establishment of new individuals. Disturbances are partly allogenic and autogenic because their impact is the result of both the magnitude of the disturbance and the resilience of the community to the particular type of alteration.

Key Temporal and Spatial Attributes of Disturbances

  • Type: Agents
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Unveiling the Universe: From Big Bang to Galaxies

The Universe: Composition

Visible Matter:

  • Normal (0.4%): Stars, planets, and intergalactic hot gas
  • Normal non-luminous (3.6%): Black holes and intergalactic gas

Invisible Components:

  • Dark Matter (21%): Unknown composition, inferred from mass measurements.
  • Dark Energy (75%): Unknown nature, responsible for the accelerating expansion of the universe.

The Origin of the Universe: The Big Bang

All matter was concentrated in a small area and underwent a massive explosion (the Big Bang). Matter was propelled

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Understanding Environmental Impact: Contamination, Audits, and Pollution

Environmental Contamination

Contamination is the introduction of pollutants into an environment through contact with another contaminated source.

Environmental Audits

An environmental audit is a diagnosis and study of the environmental situation of an installation or activity. To conduct this examination, it’s necessary to certify and verify the proper operation of systems and management, considering current regulations and available technologies.

Contents of an Environmental Impact Assessment (EIA)

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Plate Tectonics and the Scientific Method

Plate Tectonics

Plate Tectonics: Moving and Shaking. There are many major plates and dozens of smaller, or minor, plates. Six of the major plates are named for the continents within them, such as the North American, African, and Antarctic plates. Smaller plates are important to shaping the Earth too. The tiny Juan de Fuca plate is largely responsible for the volcanoes that dot the Pacific Northwest of the United States.

The plates make up Earth’s outer shell, called the lithosphere (includes the crust

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Rock Weathering Processes and Slope Stability

Mechanical Weathering Processes

Decompression (Pressure Release)

Rocks formed deep within the Earth reach the surface due to the erosion of overlying materials. This process leads to a decrease in lithostatic pressure until it reaches atmospheric pressure. This decompression causes the rock to expand, displaying numerous joints (diaclases) and widening existing cracks.

Frost Wedging (Gelifraction)

Ice is a highly effective agent of mechanical weathering, particularly in areas with fluctuating temperatures

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