The true statement is - B. The rock cycle is powered by the movement of tectonic plates.
Almost all rocks on our planet came to existence because of the tectonic activity. The movement of the tectonic plates is enabling the magma from the mantle layer to come to the surface, cool off, and create new layers of rocks. On the other hand, the same process, where there's subdustion zones, is moving the existing rocks down into the mantle layer where they are ''recycled'' in way, and this process is continuing to happen all the time.
Answer: The answer is D) A comparison of physiologic densities and arithmetic densities helps geographers understand
the capacity of land to yield food for the total population
Explanation:
Answer:
The tomatoes didn't come from the Old World during The Columbian Exchange.
Explanation:
During the time of The Columbian Exchange, thousands of goods found their way across the Atlantic, be it from one side or the other. This was very beneficial for both sides, with the Old World and the New World getting goods that imporoved the lives of the people. One of the most popular and nowadays among the most used goods, the tomato, came from the New World and was introduced in the Old World.
The tomatoes originated as a wild plant in the Andes, on the territories of modern-day Ecuador, Peru, Bolivia, and Chile. The people living in this region saw their potential and started to cultivate them, and seeing what a delight they are, other people from other parts of the New World started to cultivate them as well. The people of the Old World though were skeptical about the tomatoes initially and were not very fond of them, and they even thought that when they start to go red they are getting spoiled. Over time, this changed as people saw that they have a wonderful food product, so the tomato became one of the most popular goods.
Scientists believe convection currents are the force behind the plate tectonics theory.
