What is the most visible manifestation of eutrophication?
A) Hypoxia
B) Decomposition
C) Nitrogen fixation
D) Plankton bloom
D
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An astronaut on another planet drops a 1-kg rock from rest. The astronaut notices that the rock falls 2 m straight down in 1 s. On this planet, how much does the rock weigh?
A) 1 N B) 4 N C) 5 N D) more than 5 N
A farm field that has used only inorganic fertilizer for the past 20 years is most likely to have
A) fewer soil organisms and less soil structure but increased nutrient holding capacity. B) fewer soil organisms, less soil structure, and decreased nutrient holding capacity. C) more soil organisms, more soil structure, and increased nutrient holding capacity. D) more soil organisms, less soil structure, and decreased nutrient holding capacity.
Drinking/swallowing water that contains a harmful algal bloom (HAB) will most likely cause which of the following symptoms?
Liver toxicity and failure All answers are correct Diarrhea and vomiting Difficulty breathing
Thunderstorms are most often associated with cirrostratus clouds
Indicate whether the statement is true or false