The answer is "Groundwater"
An environment high in carbon dioxide and high in oxygen induce oxygen to bind to hemoglobin. Another factors are an environment under high pressure and an environment under low pressure.
Answer:
Francis Galton
Explanation:
Francis Galton was interested in anthropology, statistics, geography, and psychology, he try to measure i
ntelligence scientifically through <em>reaction time tests. </em>
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