The Triangular Trade, a trade with the Americas, Europe and Africa, and through the African slaves that also brought yams, the banjo and okra to the South of America.
Answer:
Best example would be Carnot engine. It is possible in theory not in real life.
Explanation:
In real engines, the heat transfers at a sudden change in temperature whereas in a Carnot engine, the temperature remains constant. In our day to day lives, reversible processes can't be carried out and there is no such engine with 100 % efficiency. Thus, the Carnot cycle is practically not possible.
The Tropical Grassland is the most common type of Ecosystem in Africa.
When it is unchecked it keeps on going and going until it is very high this very high is C) exponential.
