Convection currents occur in the MANTLE. The mantle is the second layer of the earth after the crust. The mantle is approximately 2900 km thick. Convection currents are triggered or fueled by the heat from the Earth's core.
The part of the mantle closest to the core gets heated. It then becomes less dense than the layers above so it rises. When this rising plume interacts with the crust it cools and becomes more dense than the layers below and so it sinks and this circular motion continues to form convection currents.
<span>Characteristics of "place" include things like economic activity, architecture, and culture, all of which are human elements that alter or can be influenced by the environment.
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Answer:
They maintained good farmland by managing the rivers.
Explanation:
because I just took the test hope this helps
Bolivia and Paraguay are landlocked on the map.
