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.
Answer:
D: Kim Jong-Un
Explanation:
Kim Jong-Um is considered a dictator because he has a strog way to lead hthe citizens of North Korea, and controls the nuclear weapons and militar decisions, which many feel it's a threat to people around the world. He also holds meetings with China leaders. <em>Nevertheless, he allowed the presence of free market companies in his country, and received the US president.</em>
Answer:
an increase of nationalism in Europe and Latin America
Explanation:
The correct answer is C because
Alexandria's location made a prime area for commerce, culture and knowledge. It's huge library provided it's people with knowledge and they were able to share with other people because they had many sea ports. Many people immigrated here to trade and get an education.
Answer:
B
Explanation:
I don't think most people are in the primary and secondary sectors