Fluctuations in the phosphorus cycle in aquatic ecosystems a. can lead to changes in the growth rates of aquatic populations. b. are never caused by human impact on the environment. c. lead to a decrease in the amount of phosphorus found in sediment. d. never occur naturally
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Biology, 22.06.2019 15:00
What process decreases the salinity of ocean water? decreased precipitationdecreased melting of glaciersincreased evaporationincreased runoff from rivers
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When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.
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Based on their relative positions in the periodic table, which two elements would have the same number of valence electrons?
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