Currents involve movement of ocean water masses, driven either by wind or by differences in temperature, salinity and density. The most important from a human perspective are the wind-driven surface currents that move water in the uppermost layer of the ocean.
Currents affect humans in several primary ways. Currents help shape the climate in the areas where we live, create the right conditions to support abundant ocean life in the areas where we fish, and change weather patterns through periodic events like El Nino/La Nina.
Ocean currents also cause upwelling in many areas like off in the inland parts of North America, where surface currents taking water away from the shore cause nutrient-rich water to well up from the ocean deeps. The abundance of nutrients in these areas forms fertile ground for kelp beds and marine fisheries, which in turn furnish food for humans. Alterations in current patterns like the El Nino/La Nina cycle affect humans as well by causing changes in local weather patterns in the years when they occur.
A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault. A rift valley is formed on a divergent plate boundary, a crustal extension or spreading apart of the surface, which is subsequently further deepened by the forces of erosion.
If the earth had no oceans, then the tropical regions would be comparatively warmer.
The earth without the ocean would be super-hot at the equator and really cold at the poles. The warming at the equator increases the temperature and the warm air rises. Without oceans, there will not be any winds flowing which will cause moderation of temperature, due to which extreme temperatures will be experienced in places such as extreme cold in the frigid zone and extreme heat in the equatorial region. Though temperature at tropics would be comparatively lower than equatorial region, still it would be high for the person to live in such areas hospitably. Ocean currents act similar to a conveyor belt, which transports warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics.
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<h2><u>Answer 01:</u></h2>
The white people of the U.S. Great Plains turned many of the inherent meadows to cropland, with meaningful environmental influence. Though, social consequence on the context was restricted by environmental compulsions.
Less than half of the area in the Great Plains has eternally been utilized for products. People can pick where to farm crops, it is the atmosphere that concludes where products will prosper.
Humans and the environment influenced one another. The crop-based farming turned the Great Plains climate. farmers also reacted to their situation and adjusted their land-use modes respectively.
<h2><u>Answer 02:</u></h2>
Great plains, a geographically and environmentally determined zone comprising ten lands portion which includes Montana, North Dakota, South Dakota, Nebraska, Wyoming, Kansas, Colorado, Oklahoma, Texas, and New Mexico. Traveling between Canada and Mexico, the territory extends from the 98th time (height 2,000 feet) to the Rocky Mountains (7,000 feet).
Within thirteen and twenty inches measurement, and the region's continental environment generates an atmosphere of utmost extreme heat and cold and intense weather models.
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