Biology, 19.07.2019 19:00 babygreg2001p97abr
Nanotechnology is proving ineffective at clean up pcb’s. a. only promote pesticide use in rural environments b. protect workers exposed to pesticides occupationally c. regulate the safe use of pesticides d. reduce the concentration of pesticides found in watersheds it is a only promote pesticide use in rural environments. i think.
Answers: 2
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, 21.06.2019 20:30
Prompt compare the three types of volcanic mountains in terms of shape, type of eruption, and the minerals that make up the volcano
Answers: 1
Biology, 22.06.2019 08:20
Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups
Answers: 1
Nanotechnology is proving ineffective at clean up pcb’s. a. only promote pesticide use in rural env...
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