Glossary H

The Environmental Glossary. Letter H +++ Popular Articles: 'Human', 'Hazard', 'Health'

Deutsch: Hydrosphäre / Español: Hidrosfera / Português: Hidrosfera / Français: Hydrosphère / Italiano: Idrosfera /

A Hydrosphere is the part of the Earth composed of water including clouds, oceans, seas, ice caps, glaciers, lakes, rivers, underground water supplies, and atmospheric water vapor.

Deutsch: Hydroxid / Español: Hidróxido / Português: Hidróxido / Français: Hydroxyde / Italiano: Idrossido

Hydroxide in the environment context refers to a negatively charged ion (OH⁻) or any compound containing this ion. Hydroxides are crucial in various environmental processes, particularly in water chemistry, where they influence pH levels and play a significant role in the neutralization of acids. These compounds are found in both natural settings, such as bodies of water, and as a result of industrial processes, including waste treatment and chemical manufacturing. The presence and concentration of hydroxides in the environment can significantly impact water quality, aquatic life, and soil chemistry.

A Hypersensitivity Diseases is Diseases characterized by allergic responses to pollutants. The Hypersensitivity Diseases most clearly associated with indoor air

HYPERSENSITIVITY PNEUMONITIS is a group of respiratory diseases that cause Inflammation of the lung (specifically granulomatous cells). Most forms of Hypersensitivity Pneumonitis

A Hypothesis Test is a statistical procedure for determining if a sample provides sufficient evidence to reject or accept one statement regarding the population of interest in favor of an alternative statement.

Deutsch: Hypoxie / Español: Hipoxia / Português: Hipóxia / Français: Hypoxie / Italiano: Ipossia /

A hypoxia is the Depletion of dissolved Oxygen in water, a condition resulting from an overabundance of nutrients of human or natural origin that stimulates the growth of algae, which

Hypoxic are waters that have a very low Oxygen level.