The toxicity of marine pollutants is evaluated through bioassays by ________
A) calculating the concentration at which 50% of the test organisms die
B) determining the length of time that the pollutant remains in the environment
C) determining the total biomass of affected organisms in the environment
D) estimating the number of trophic transfers in the food web affected by the pollutant
E) the EPA
A
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Indicate whether the statement is true or false
Picoplankton number 100 million individuals in a liter of seawater at all depths in the ocean
Indicate whether the statement is true or false
If San Francisco, California and Washington D.C. lie nearly on the same line of latitude, then why is San Francisco cool, foggy, and mild during the summer months and Washington D.C is hot and humid?
Movements along normal faults can produce alternating upthrown and down-dropped fault blocks. What are the names associated with these blocks, respectively?
A) Synclines and anticlines B) Domes and basins C) Horsts and grabens D) Left-lateral and right-lateral