Explain what the pH scale is and how it is used to measure acid rain
What will be an ideal response?
Answer: The pH scale measures the relative concentration of hydrogen ions. It ranges from 0-14, with the lower numbers being more acidic. Acid rain is considered to be precipitation falling with a pH of less than 5.6. Geographically, the pH varies widely in the United States.
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Reading through the long list of health effects of smoking tobacco, a student is shocked to find that smokers are inhaling carbon monoxide. Which of the following symptoms is most related to this particular component of tobacco smoke?
A) Shortness of breath B) Fibrosis of the lungs C) Chronic bronchitis D) Suppressed immune functions
In Australia, the summer solstice occurs a few days before Christmas (December 25)
Indicate whether the statement is true or false
The type of agriculture practiced near large cities, which includes producing fruits and vegetables, is called
A) sawah. B) truck agriculture. C) subsistence agriculture. D) truck farming. E) truck hybridization.
The east and west coasts of the North America have very different temperatures at the same latitude primarily because of ocean currents
Indicate whether the statement is true or false