Answer:
Third Agricultural Revolution.
Explanation:
This explanation is describing the Third Agricultural Revolution. I hope this helps you!
China has become a world leader in production of farm products including rice, wheat, potatoes, sorghum, peanuts, tea millet, barley, cotton, oilseed and soybeans. Initially going back eons, first the use of cast iron tools and beasts of burden were introduced in agriculture. Now, while communes have beendisbanded, and individual farming has been restored, there are quotas for the individual farmers and also some state farms. In modern times, mechanization has been promoted and state sponsored projects like the Three Gorges Dam has provided significant irrigation.
A common crescent-shaped dune with horns pointed downwind is called a barchan dune.
A barchan or barkhan dune is a crescent-shaped dune. Barchan ("BAR-kahn") dunes form in areas with only one wind direction, and little or no vegetation. If conditions were "perfect"—the landscape was flat, winds blew from only one direction, vegetation could not grow, and sand was available but limited —barchan dunes would dominate a sandscape. One of the commonest types of dunes, it occurs in sandy deserts all over the world. Barchans are mostly formed by the wind from one direction and appear convex. They are arc-shaped, significantly asymmetrical in cross-section, with a gradual slope towards the wind sand ridge, and made out of well-sorted sand.
To learn more about barchan dune here
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<u>Answer:</u>
<em>The ocean currents are always in a continuous motion in which there is ales and more chances of permanent and temporary movements.</em>
<u>Explanation:</u>
<em>Ocean current is referred as the direction of movement of the ocean water which is flowing in one of the Earth’s Ocean. </em>
The currents in the ocean are generated from the rotatory force of the earth circulation.
<em>Global climate here is referred as the long term of rising in the temperature in which earth will get heated up gradually over time.</em>
