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.
Answer: A. Beyond
Explanation:
The prefix extra in this contest means beyond. That means that a beyond solar planet is outside solar and something that is beyond terrestrial which means something outside of Earth.
B, C, and D are incorrect answers because they are not fitting into the context of the sentence.
Um... the water cycle. Evaporation, condensation, and precipitation.
The continent that had the most malnourished children in this time frame was Africa. The biggest part of the continent was in very bad economical state, civil wars and genocides were raging, lots of the existential goods were not available for the people, that contributed to big portion of the children to be malnourished, that contributed to very high percentage of death among the youngest population.
