<span>b. By 1953 China's population had reached over 550 million people.or c</span>
Answer:
The Columbian Exchange refers to the exchange of diseases, ideas, food e Columbian Exchange refers to the exchange of diseases, ideas, food
crops, and populations between the New World and the Old World rops, and populations between the New World and the Old World
following the voyage to the Americas by Christo ollowing the voyage to the Americas by Christopher Columbus in 1492. pher Columbus in 1492.
The Old World—by which we mean not just Europe, but the entire Eastern he Old World—by which we mean not just Europe, but the entire Eastern
Hemisphere—gained from the Columbian Exchange in a number of ways. Discov- emisphere—gained from the Columbian Exchange in a number of ways. Discoveries of new supplies of metals are perhaps the best known. But the Old World also ries of new supplies of metals are perhaps the best known. But the Old World also
gained new staple crops, such as potatoes, sweet potatoes, maize, and cassava.
Explanation:
Weather is the atmospheric condition for a day ie the weather for today is rainy while climate is the average daily atmospheric condition of a place which is usually over a very long period of time. ie the climate of a country is wet
Mammals first appeared during the <span>Mesozoic </span>era.Hope I helped, good luck!'
