Water Quality & Pollution: Glossary of Terms
Water Quality & Pollution Glossary
Urban Wastewater
Urban wastewater refers to water carrying waste from urban areas, including households and the service sector. This water is often polluted with organic matter, pathogenic germs, bleach, and heavy metals from urban soil and vehicles.
Wastewater
Wastewater is any water that carries waste from human activities, making it contaminated with organic matter, detergents, heavy metals, and nitrates. It can be classified as urban sewage, industrial wastewater,
Read MoreStructure and Composition of the Sun and Earth
The Sun
Structure of the Sun
Core: The Sun’s core is where nuclear fusion occurs due to high temperatures. It is the power generator of the Sun.
Radiative Zone: In this zone, energy-carrying particles (photons) try to escape, but their journey can last 100,000 years. This is because these photons are continuously absorbed and re-emitted in different directions.
Convective Zone: This zone experiences the phenomenon of convection. Columns of hot gas rise to the surface, cool, and then descend again.
Photosphere:
Read MoreUnderstanding Economics: Concepts and Systems
Maslow’s Hierarchy of Needs
Maslow’s physiological needs are the basic human needs that depend on satisfaction for survival. The most important needs are innate, unlearned, and intuitive.
- Security: These needs serve to consolidate what has been obtained. When these needs are met, the individual feels safe and protected.
- Social: These needs are related to an individual’s emotional development and the need for social association.
- Self-Esteem: These needs affect an individual’s self-improvement and confidence.
Principles of Economics
Maslow’s Hierarchy of Needs
Maslow’s physiological needs are the basic human needs that depend on satisfaction for survival. (The most important statement is that they are innate, unlearned, and intuitive.)
- Security: These needs serve as extra consolidation obtained from the moment of safety, so that the individual feels safe and protected.
- Social: These needs are related to the individual’s emotional development and the need for social association.
- Esteem: These needs affect the individual’s self-confidence.
Mendel’s Laws and Genetics: Understanding Heredity
Mendel’s Laws and Genetics
Introduction
In the second half of the nineteenth century, Gregor Mendel discovered the basic principles governing the transmission of hereditary characters. For his experiments, he chose the pea plant due to its easy cultivation, rapid growth, and easily observable characteristics. Pea plants can self-pollinate and are easy to artificially impregnate, making them ideal for study. Mendel selected seven characteristics and utilized pure lines, studying the descent along several
Read MoreHazard Classification and Vulnerability: A Comprehensive Guide
Hazard Classification
Based on the origin, hazards are classified into:
Biological Hazards
Processes or phenomena of organic origin or conveyed by biological vectors, including pathogenic microorganisms, toxins, and bioactive substances. Examples of biological hazards include:
- Epidemic and pandemic diseases
- Plant or animal contagion
- Insect or other animal plagues and infestations
Geological Hazards
Geological processes or phenomena that may cause loss of life, injury or other health impacts, property damage,
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