The answer is B.
The primary positive effect of the Columbian exchange was the introduction of New World crops, such as potatoes and corn, to the Old World. The most significant negative effects were the transmission of African populations into slavery and the exchange of diseases between the Old and New World.
Answer:
nearness to sea or ocean
Explanation:
Presence of water body is the factor that is responsible for the difference in annual temperature although the Humid Continental and Marine climates are present at the same latitudes. Marine climates are located near the water bodies such as ocean or sea while on the other hand, Humid Continental climates are located farther from the water bodies such as sea or ocean.
Answer:
The evidence that convinced many geologists that continents were slowly moving is Option A: the fit of the continents together.
Explanation:
In 1912, Alfred Wegener produced evidence that continents were moving but his idea was rejected by geologists. After about 50 years, Harry Hess confimed that Wegener's ideas were correct. He explained how the sea floor was spreading to prove that continents were in motion. It was also called the idea of continental drift.
The bottom of the sea was not smooth, there were volcanic eruptions and canyons. Harry explained that Earth's crust has been moving away on each side of the ridge of the ocean. So, the fit of the continents together proved that continents were moving.
Answer:
A watershed or drainage basin is a gepgraphic area...
