Chemistry, 02.02.2020 10:42 cvannesacanto
Fertilizers have nutrients that plants grow. sometimes, when it rains, fertilizers are washed away from farmland into ponds and lakes. this promotes the growth of algae, a type of plant, present in the water. it is observed that algae grow very fast and cover the surface of the pond completely. they use up all the dissolved oxygen in the pond. how does this affect the other organisms in the pond?
a) they start eating algae.
b) they do not get enough oxygen, and die.
c) they get entangled in the algae, and die.
d) they leave the pond and go to live elsewhere.
Answers: 3
Chemistry, 22.06.2019 03:00, ian2006huang
Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.
Answers: 3
Chemistry, 22.06.2019 13:30, hdhtvthjr
Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering
Answers: 1
Chemistry, 22.06.2019 14:00, cheyennemitchel238
Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *
Answers: 2
Fertilizers have nutrients that plants grow. sometimes, when it rains, fertilizers are washed away...
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