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Possible Answers:
Mold.
Last seen on: Daily Celebrity Crossword – 1/23/20 0
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Random information on the term “Mold”:
Bioaerosols (short for biological aerosols) are a subcategory of particles released from terrestrial and marine ecosystems into the atmosphere. They consist of both living and non-living components including organisms, dispersal methods of organisms, and excretions.
Charles Darwin was the first to observe the transport of dust particles but Louis Pasteur was the first to research microbes and their activity within the air. Prior to Pasteur’s work, laboratory cultures were used to grow and isolate different bioaerosols. Because not all microbes can be cultured, many were undetected before the development of DNA-based tools. Pasteur also developed experimental procedures for sampling bioaerosols and showed that more microbial activity occurred at lower altitudes and decreased at higher altitudes.
Bioaerosols include fungi, bacteria, viruses, and pollen. Their concentrations are greatest in the planetary boundary layer (PBL) and decrease with altitude. Survival rate of bioaerosols depends on a number of biotic and abiotic factors which include climatic conditions, ultraviolet (UV) light, temperature and humidity, as well as resources present within dust or clouds. Bioaerosols found over marine environments primarily consist of bacteria, while those found over terrestrial environments are rich in bacteria, fungi and pollen. The dominance of particular bacteria and their nutrient sources are subject to change according to time and location.