All of the following statements accurately describe eutrophication EXCEPT which one?
A) Eutrophication may be accelerated by agricultural runoff containing fertilizers.
B) Eutrophication can be part of a natural process that converts freshwater to marsh to dry land.
C) Eutrophication is beneficial and enhances the diversity of life-forms in a body of water.
D) Eutrophication accelerates plant and algal growth at the expense of animal diversity.
E) Sewage and other organic nutrient pollutants can enhance eutrophication.
C
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Nitrifying Thaumarchaeota outcompete nitrifying bacteria in many aquatic and terrestrial environments because Thaumarchaeota
A) are well-adapted to high salinity and extreme UV irradiation. B) are well-adapted to temperature extremes. C) are well-adapted to very low nutrient and electron donor concentrations. D) have very resistant specialized cells that survive long periods of dehydration and nutrient starvation.
Mitochondria and chloroplasts are thought to have arisen from:
A. endosymbiotic episodes. B. parasitic interactions. C. normal organelle development. D. None of these answers are correct.
This structure can grow >50 m long in kelp
a. Blade b. Holdfast c. Stipe d. Gas bladder e. Rhizoid.
Passive immunity can provide immunity ____
a. temporarily b. permanently
c. for months d. for many years e. for an entire lifetime