搜尋結果
Tilapia have been used as biological controls for certain aquatic plant problems. They have a preference for a floating aquatic plant, duckweed (Lemna spp.), but also consume some filamentous algae. In Kenya, tilapia were introduced to control mosquitoes, which were causing malaria, because they consume mosquito larvae, consequently reducing the numbers of adult female mosquitoes, the vector ...
18.2–33.5 million [6] (estimated) Coronavirus disease 2019 ( COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. The first known case was identified in Wuhan, China, in December 2019. [7] Most scientists believe the SARS-CoV-2 virus entered into human populations through natural zoonosis, similar to the SARS-CoV-1 and MERS ...
Social contagion, the spontaneous spread of thoughts, feelings, or behaviors through a group or network. Emotional contagion, a tendency to feel others' emotions. Behavioral contagion, a tendency to mimic others' behavior. Law of contagion, a folk belief related to magical thinking. Financial contagion, a scenario in which financial shocks ...
