Which of the following can be a chronic effect of pesticides on humans?
A. Immune system problems
B. Fetal deformities
C. Cancer
D. Parkinson's disease
E. All of these are correct
Answer: E
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What causes people in the US to move to cities and increase the urban population?
A. jobs B. drought C. famine D. war
The main type of rocks in the Peninsular Ranges of Southern California and Mexico is
A) volcanic rocks erupted from a large volcano. B) granite and metamorphic rocks that formed at depth. C) flat-lying sedimentary rocks. D) unconsolidated sand and gravel.
Because the climate of a region slowly changes and tectonic adjustments slowly occur, the landscape
A) is constantly at a threshold condition. B) is continuously adjusting to new conditions that develop. C) is usually in a state of dynamic equilibrium. D) is constantly at a threshold, continuously adjusting, and in a state of dynamic equilibrium. E) is continuously adjusting, and in a state of dynamic equilibrium, but not constantly at a threshold.
Carbon dioxide ____
a. ?is not dangerous due to its strong odor b. ?is a danger in a volcanic area even when no eruption is imminent c. ?tends to collect in the attic of houses when no eruption is imminent d. ?is only a danger during periods of volcanic activity e. ?is a particular danger to climbers and hikers since it is emitted at the summit of a volcano