Identify four categories of human health problems associated with water pollution and provide an example for each one.
What will be an ideal response?
| 1) Pathogenic organisms | Cholera | Severe dysentery |
| 2) Organic chemicals | Pesticides-Dioxin | Birth defects, genetic disorders |
| 3) Inorganic chemicals | Metals-mercury | Neurological damage |
| 4) Radioactive materials | Uranium | Lung cancer and other cancers |
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At 10°C, which is more concentrated-a saturated solution of sodium nitrate, NaNO3, or a saturated solution of sodium chloride? (See figure shown above)
A. At 10°C, a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl. B. At 25°C, a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl. C. At 10°C, a saturated solution of sodium chloride, NaCl, is more concentrated than a saturated solution of sodium nitrate, NaNO3 D. At 20°C, a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl.
The cP air masses pictured here originate
A) over land masses and bring cold air during the winter.
B) over land masses and bring warm air during the summer.
C) over water and bring warm air during the summer.
D) over water and bring cold air during the winter.
Which of the following is true of divergent and convergent plate movement?
A) The direction of plate movement is the same. B) Convergent plate movement is less symmetrical than divergent plate movement. C) Material is destroyed with both plate movements. D) Both plates have boundaries.
Cap and Trade is a system that ________
A) allows industries to set their own levels for pollution emission so trading can continue B) rapidly brings pollution emissions to near zero for participating industries C) permits industries that pollute under the federal cap to sell credits to industries that pollute over the cap D) specifies a certain cap on industrial pollutants that can be traded to other nations E) has been repealed by Congress as useless in diminishing pollution