Organophosphates and ________ are similar in that they lack environmental persistence and have low bioaccumulation.
A. Chlorinated hydrocarbons
B. Inorganic pesticides
C. Carbamates
D. Fumigants
E. Natural organic pesticides
Answer: C
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Tornadoes are most often generated along the ________ front of a middle-latitude cyclone
Fill in the blank(s) with correct word.
Before there were modern humans on Earth (i.e., before 200,000 years ago), how many species became extinct each year? Assume there have always been exactly 10 million species.
A. 10/year B. 1/year C. 100/year D. 1000/year
What is the connection between the amount of silica in a melt and how viscous it is?
A) Silica forms strong bonds, so higher amounts of silica make for more viscous magma. B) Higher silica content lowers the melting temperature and since increasing the temperature of a magma decreases viscosity increasing silica content increases viscosity. C) Higher silica content means a larger amount of water a magma can dissolve and water decreases magma viscosity, so increasing silica conte
Large quantities of which of the following substances are injected into a thunderstorm as the primary method for preventing the growth of large, destructive hailstones?
A. silver iodide B. hydrophobic nuclei C. ice crystals D. dry ice