Name the three pollutants that have decreased the most since 1990.
Responses will vary, but should include the information that follows: Lead, carbon monoxide, and sulfur dioxide have decreased the most since 1990.
Compare and contrast heat exhaustion and heat stroke.
Heat exhaustion and heat stroke are both caused by prolonged exposure to the Sun with very high temperatures. Heat exhaustion is typically less severe with symptoms of headache, nausea, pale skin, and fatigue. Heat stroke results when the body cannot regulate its body temperature any longer, and it is life threatening. Immediate medical assistance should be obtained if you suspect heat stroke.
Identify the processes by which the human body both gains and loses fluids.
The cycle of fluid intake and loss continues on a daily basis. Fluid intake is accomplished by drinking fluids and eating foods. Fluid losses occur through urination, perspiration, and respiration.
Discuss two different ways that our soil can become polluted.
Soil can be polluted by exposure to polluted water sources, exposure to solid waste, mining operations, and pesticide/herbicide use.
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