Biology, 07.10.2019 19:30 camila9022
Humans and dogs often have a relationship in which the dog provides protection and companionship in return for food and shelter. what type of relationship does this illustrate?
Answers: 1
Biology, 21.06.2019 17:00
What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?
Answers: 1
Biology, 21.06.2019 19:30
Mention true or false : a) cholera is marked by acute diarrhea and no urination. b)mosquitoes are the source of dysentery germs.
Answers: 1
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
Humans and dogs often have a relationship in which the dog provides protection and companionship in...
Computers and Technology, 31.08.2019 23:50
Mathematics, 31.08.2019 23:50
Business, 31.08.2019 23:50
History, 31.08.2019 23:50
Computers and Technology, 31.08.2019 23:50
Computers and Technology, 31.08.2019 23:50
Arts, 31.08.2019 23:50
Mathematics, 31.08.2019 23:50
Biology, 31.08.2019 23:50