Which is a reason for the rise of nitrate levels in ground water?
a) overuse of fertilizers <...
Biology, 01.09.2019 10:30 beausisugpula
Which is a reason for the rise of nitrate levels in ground water?
a) overuse of fertilizers
b) ammonification by animals
c) soil erosion at grasslands
d) nitrogen fixation by azotobacter
Answers: 1
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Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake
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Why do oceanic plates tend to subduction when colliding with a continental plate
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