Synergistic effects of toxicants that are mixed together ________
A) typically have simple additive effects
B) are not numerous in the natural environment
C) have effects that tend to cancel one another out
D) always involve synthetic toxicants
E) often are multiplicative (the mixed toxicants may multiply each other's effects)
E
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Commercial pastoralism can be found in the Western United States
Indicate whether this statement is true or false
Which types of commercial agriculture DO NOT rely on inexpensive labor?
A) Mediterranean farming B) grain farming C) horticulture and fruit farming D) all of the above E) both Mediterranean and horticulture and fruit farming
Which of the following are examples of chemical weathering? (Check all that apply.)A) DissolutionB) WedgingC) OxidationD) Hydrolysis
What will be an ideal response?
Where air is sinking (high pressure), rainfall is likely as the air sinks.
Answer the following statement true (T) or false (F)