Answer:
To avoid Hyper-oxygenation
Explanation:
Crucian carp have the ability to increase gill surface to maximize oxygen intake, or reduce overall area when under specif circumstances. If the fish does not need so much oxygen it will cover the protruding lamellae to reduce oxygen intake and avoid Hyper-oxygenation.
In 1763, Spain owned land west of the Mississippi River. Spaniards were the first people to visit the Lousiana region in 1541. However, it was the French who established a presence in this area in 1682. They claimed the entire Mississippi River basin. <span>France controlled this area until 1763 when it ceded the land west of the Mississippi River to Spain. </span> France was then defeated in the French and Indian war so she lost the territory east of the Mississippi River to Great Britain.
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I think White House of staffs
The correct answer is observational
Observation is a constant source of knowledge for man about himself, others and the world around him. The observational method is one of the most used in the social sciences and has some curious aspects.
