Biology, 23.06.2021 20:00 keilahsalmon
Terry and James are partners in a mystery lab. The boys have a compound light microscope and several unlabeled slides. Their task is to find out
everything they can about the samples on the slides. Terry puts a slide on the microscope stage and focuses the lenses on the sample. He can see
that the sample is made up of tiny cells.
Even without knowing anything else about the cells he sees, what can Terry reasonably conclude about them?
.
A The cells are currently alive.
B
The cells came from animals or plants
C. The cells were produced by other cells.
D. The cells help an organism to fight off illnesses.
Answers: 3
Biology, 21.06.2019 20:00
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 23:00
Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?
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Biology, 22.06.2019 04:00
What is the difference between how ionic and covalent bonds form
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Biology, 22.06.2019 09:30
What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent
Answers: 2
Terry and James are partners in a mystery lab. The boys have a compound light microscope and several...
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