B. The change in Reaction times for each person
Chloroplast and Chlorophyll a & b, Carotenoids , xanthophylls & phycobilins,
The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
If water was the cause of the sickness, then Dr. Snow had it well shutting down the Broad Street Water Pump.
Dr. John Snow was an English Obstetrician that tried to demonstrate in 1854 that cholera was the cause of many deaths in the water pump of Broad Street, Soho, London. At that time, scientists thought that the disease spread due to bad air, although Dr. Snow tried to prove that contaminated water was the cause. So the decision to shut down the pump was correct, although the London authority had its doubts.
Answer:
DNA or protein sequences of shared genes.
Explanation:
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