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Infectious mononucleosis (IM, mono), also known as glandular fever, is an infection usually caused by the Epstein–Barr virus (EBV). [ 2 ] [ 3 ] Most people are infected by the virus as children, when the disease produces few or no symptoms. [ 2 ]
Toxic to cardio and central nervous systems, gastrointestinal bleeding [3] Ephedra: ma huang: Ephedra sinica: Agitation and palpitations, [3] "hypertension, irregular heart rate, insomnia, nervousness, tremors and seizures, paranoid psychosis, heart attacks, strokes, and death", [1] [15] kidney stones [15] Flavonoids (contained in many ...
Food cycle is an obsolete term that is synonymous with food web. Ecologists can broadly group all life forms into one of two trophic layers, the autotrophs and the heterotrophs. Autotrophs produce more biomass energy, either chemically without the sun's energy or by capturing the sun's energy in photosynthesis, than they use during metabolic ...
This is a list of large carnivores known to prey on humans. The order Carnivora consists of numerous mammal species specialized in eating flesh. This list does not include animal attacks on humans by domesticated species (dogs), or animals held in zoos, aquaria, circuses, private homes or other non-natural settings.
The polar regions are characterised by truncated food webs, and the role of viruses in ecosystem function is likely to be even greater than elsewhere in the marine food web, yet their diversity is still relatively under-explored, and the way in which they affect polar communities is not well understood, [125] particularly in nutrient cycling.
Those viruses became deadly human contagions and spread in animals and people. A number of experts think it’s unlikely this virus will become a deadly global contagion, based on current evidence ...
The resulting number could potentially be an overestimate given that mild cases of H5N1 can go undetected and unreported. How deadly bird flu is in humans may depend on a number of other factors ...
Some animals can act as sentinels because they may be more susceptible or have greater exposure to a particular hazard than humans in the same environment. [1] People have long observed animals for signs of impending hazards or evidence of environmental threats. Plants and other living organisms have also been used for these purposes.