Answers: 3
Biology, 21.06.2019 20:00
Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection
Answers: 3
Biology, 22.06.2019 01:30
Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere
Answers: 1
Biology, 22.06.2019 03:00
Match with o for organic and i for inorganic for each compound
Answers: 2
Biology, 22.06.2019 08:00
What is usually (but not always) related to the metabolic processes of living organisms in its organic form?
Answers: 1
Help me right now! Write an explanation of the benefits/ harmful uses of Zebra Mussel...
History, 20.10.2020 04:01
Social Studies, 20.10.2020 04:01
Health, 20.10.2020 04:01
Chemistry, 20.10.2020 04:01
Mathematics, 20.10.2020 04:01
Computers and Technology, 20.10.2020 04:01
Mathematics, 20.10.2020 04:01
Mathematics, 20.10.2020 04:01
English, 20.10.2020 04:01
Biology, 20.10.2020 04:01