Answer:
Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes.
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Answer:
kingdom, phylum, class,order , family,genus,species
The answer is B. Bacteria blooms and decreased underwater photosynthesis causes asphyxia, killing the fish.
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Answer:
The answer is A. Human activities have a greater impact on terrestrial and freshwater ecosystems.
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