Which of the following is a leading cause of disease in Bangladesh?
A. dewatered aquifers
B. the depth of the water table
C. saltwater intrusion
D. water contamination
Answer: D
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Which statement best describes how region 1 will look in the future? 
A. a deep basin that is underlain by oceanic crust and a thin sediment cover B. above sea level as this area becomes rifted apart C. higher in elevation because magma generated along a subduction zone will rise into and thicken the crust
The expansion of desert-like landscapes, generally as a result of human activities in marginal lands, is called _______________
Fill in the blank(s) with correct word
What is NOT true about seismic waves?
A. Some seismic waves travel on the surface and are called surface waves. B. The material within the wave moves long distances along with the wave. C. Some seismic waves travel through the interior of Earth. D. Most seismic waves can be described as a series of repeating crests and troughs. E. Some surface waves shuffle material side to side while others move material up and down.
These diseases are the three largest viral killers
a. malaria, AIDS, and SARS b. tuberculosis, AIDS, and malaria c. Lyme disease, West Nile virus, and SARS d. flu, AIDS, and hepatitis B e. flu, AIDS, and West Nile virus