The trophic level of "producers" includes ________
A) any organism producing biomass directly from photosynthesis
B) any organism using oxygen for respiration
C) heterotrophs only
D) the sum of both living and dead biomass in an ecosystem
E) heterotrophs and autotrophs
A
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Discuss and analyze the patterns of immigration to Latin America as well as patterns of emigration from Latin America after independence in the 19th Century
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A sea breeze is usually best developed early in the morning
Indicate whether the statement is true or false
Which of the following solutions is isotonic with a 0.15 M NaCl solution?
A) 0.15 M glucose, C6H12O6 B) 0.30 M glucose, C6H12O6 C) 0.10 M aluminum chloride, AlCl3 D) none of these
Water's viscosity is a ________ to planktonic organism and a ________ to nektonic organisms
A) help; help B) help; hindrance C) hindrance; help D) hindrance; hindrance E) Water's viscosity has no impact on both planktonic and nektonic organisms.