Biology, 06.09.2021 21:20, flowersthomas1969
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. When most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that .
Answers: 1
Biology, 22.06.2019 06:20, daniii000
Which of these statements is false? a. others may notice a problem with a relationship before the people involved. b. the first sign of a problem with a relationship is a feeling of anger. c. damaged relationships can be repaired. d. even good relationships can be damaged.
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Biology, 22.06.2019 10:50, prxncekevin
What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b. diffusion c. endocytosis d. exocytosisc. endocytosis
Answers: 2
Biology, 22.06.2019 13:30, jeanine239
During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane
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Over the past 60 years, many amphibian species have experienced significant population declines, and...
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