Which feature do all adult echinoderms have?
moveable spine
muscular foot
ma...
Biology, 27.02.2020 17:14 gungamer720
Which feature do all adult echinoderms have?
moveable spine
muscular foot
mantle
endoskeleton
Answers: 3
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Read the following scenario to answer the following question. 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 a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution
Answers: 2
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Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?
Answers: 2
Biology, 22.06.2019 07:00
Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.
Answers: 2
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