Answer:
thermite reaction
Explanation: The reaction between iron(III) oxide and aluminum produces aluminum oxide and iron. The chemical equation of the reaction is: This reaction is known as a thermite reaction and is highly exothermic. The large amount of heat released is enough to melt oxygen and aluminum.
Answer:
Globalization.
Explanation:
Globalization is the result of the improved communication technology and greater economic interdependence of different countries over each other. But the term is used in a wider perspective in the modern world as it is not the exchange of commodities but also include people across national boundaries and cultures.
Answer:
D
Explanation:
in some countries like India and Pakistan they do that to get good luck
Answer:
d. attending a movie
Explanation:
The opportunity cost of going to a concert is attending a movie because he will utilize all his time in the concert and will have no time left for movie. Also this was the second option in his list.
The opportunity cost of going to concert is the enjoyment time of the movie. If he did not go to a concert he would have watched the movie.
The opportunity cost is the value of one alternative chosen over the other. It may be the value of time, money etc.