I would say that the answers which show how the physical environment affects people are b) Derrick, who lives near the Shenandoah Mountains, spends most weekends hiking (because he lives near those mountains, he can do this on a regular basis) and e) Penelope, who lives in the San Juan Islands, seldom leaves her house without an umbrella (because it always rains there). I would also add C) Jocelyn, who lives in Boothbay Harbor, Maine, makes her living by selling lobsters to local restaurants (because that place has a lot of lobsters).
The population decays by a factor of (1/2 )^1/4 every hour.
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Exponential Function</h3>
An exponential function is in the form:
y = abˣ
Where a is the initial value of y, b is the multiplier, y and x are variables.
Let y represent the bacteria population after x hours.
A bacteria population decreases by a factor of 1/2 every 4 hours.

The population decays by a factor of (1/2 )^1/4 every hour.
Find out more on Exponential Function at: brainly.com/question/12940982
The scientist will publish it and do further observations in order for it to be 100% accurate