## (Solved) Lab 15: Biological Hazards Page 168 1. List several reasons why malaria does not occur in the continental US or central Asia (3 pts). a. b. c. 2.

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Lab 15: Biological Hazards
Page 168
1. List several reasons why malaria does not occur in the continental US or central Asia (3 pts).
a.
b.
c.
2. Explain how earthquakes can lead to the spread of cholera (2 pt).
3. Explain how this (typhoid) longer-term occurrence can happen (2 pt).
Page 170
1. If a certain virus has a doubling time of 5 minutes, how long would it take to double the amount of
virus (4 pts)? (Hint: use T=70/r, where T=the time it takes for a quantity to double in time)
2. Following the 2010 census, a community had an annual population increase of 15%. At that growth
rate, how much time will it take for its population to double, assuming no other changes (2 pts)?
Page 172
1. Examine the data in Table 15.2. Generalize as to which region of the state does the best job of
managing its waste. Note that the data are based on per capita (person) calculations, so population
centers are not biasing the data.What possible explanation can you suggest for the values in your
selected region (2 pts)?
2. Which region generates the most waster per capita? Why do you think this is the case (2 pts)?
3.How do large cities, such as Los Angeles, San Diego, and sanfrancisco do in terms of managing their
waste (2 pts)?
4. If we assume that regions in California that generate more waste per capita recycle less, can you
generalize about recycling in large cities versus more rural areas, such as the mountain region (2 pts)?
5. Assume the average per capita disposal rate in California is 0.35 tons per resident per year. How
much waste does the average person in California generate (4 pts)? Give your answer in
a. Pounds per year:
b. Pounds per day: 6. The U.S. Census Bureau estimated the population of California in 2009 at 36,961,664 people. Based
on your calculation in question 5 above, how much waste (in tons) did all residents of the state produce
that year? More information on specific areas in California is available at
http://quickfacts.census.gov/qfd/states/06000.html (2 pts)?

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