Answers: 3
Biology, 21.06.2019 19:00
The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.
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
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Biology, 22.06.2019 06:10
Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt
Answers: 2
Biology, 22.06.2019 06:20
All organisms contribute some water to the water cycle by conducting
Answers: 1
Ayuda ayuda, Cloro tiene 7 electrones de valencia. Hidrógeno tiene un electrón de valencia. ¿Cuántos...
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