Answers: 2
Biology, 21.06.2019 17:00, erieannapickett12
How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey
Answers: 2
Biology, 21.06.2019 20:00, jjxt126
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
Biology, 21.06.2019 21:00, joejoefofana
The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is
Answers: 1
Biology, 22.06.2019 04:50, kaylallangari2145
How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.
Answers: 3
Do roots or stems grow first in trees...
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