4.0 tons per acre per year

Liquid water is the major agent of erosion on Earth. Rain, rivers, floods, lakes, and the ocean carry away bits of soil and sand and slowly wash away the sediment. Rainfall produces four types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.

Deforestation. Deforestation is another practice that can greatly increase the rate of erosion in a region. One of the most important barriers to erosion is plant life, as long-lived trees and other species put down roots that literally help hold the soil together.

Calculating the Erosion Rate The erosion rate measures the amount of soil mass lost over a specified time period. If 30,000 kilograms of soil was lost over four years, then: Erosion rate equals 30,000 divided by 4, or 7,500 kilograms per year.

Humans affect erosion rates in a number of ways across the globe. Human activities such as repeatedly walking or biking the same trails or areas can also contribute to erosion slowly over time. Forest fires also contribute to soil erosion, as vegetation previously holding the soil in place is often destroyed.

Humans cause erosion at a rate 10 to 15 times faster than any natural process, according to new research by Bruce Wilkinson, a sedimentary geologist. Scientists have long identified humans as the primary agents altering the shape of the Earth’s surface.

Weathering and People Weathering is a natural process, but human activities can speed it up. For example, certain kinds of air pollution increase the rate of weathering. Burning coal, natural gas, and petroleum releases chemicals such as nitrogen oxide and sulfur dioxide into the atmosphere.

Positive Impacts • The weathering of rocks helps to form the basic component of soil. Soil is very essential for Human Activities . Negative Impacts • Erosion by flowing water during floods causes extensive damage to human properties and they also destroy lives. Floods can cause crops and livestock destruction.

Example of weathering: Wind and water cause small pieces of rock to break off at the side of a mountain. Weathering can occur due to chemical and mechanical processes. Erosion is the movement of particles away from their source. Example of erosion: Wind carries small pieces of rock away from the side of a mountain.

Without weathering, erosion is not possible. Because the two processes work so closely together, they are often confused. However, they are two separate processes. Weathering is the process of breaking down rocks.

Erosion is an important step in the formation of sedimentary rocks, let alone the entire rock cycle. If there is no erosion, there would be no sediments that would be deposited in different places. In this case, it would affect the shape of the Earth’s surface and some minerals would not be formed.

The most natural form of erosion in the examples is C, waves washing over rocks on the beach. In B, this is the acid rain, and in D it is the erosion of soil that occurs due to the off-road vehicles.

There will be NO topography, no ice, no winds, no water, no river, no lakes, no aquifer, no seas, no ocean. Minerals would get scarce, no more will be deposited. There will be no sediments for rooting of the plants, if plants cannot grow so there will be no photosynthesis on the universe because of no plantation.

Granite is the ultimate silicate rock. As discussed elsewhere in greater detail, on average oxygen and silicon account for 75% of the earth’s crust. The remaining 25% is split among several other elements, with aluminum and potassium contributing the most to the formation of the continental granitic rocks.

Wind, water, and ice are the three agents of erosion, or the carrying away of rock, sediment, and soil. Erosion is distinguished from weathering — the physical or chemical breakdown of the minerals in rock.

If the weathering process cease to exist in the universe, every landscape will remain the same even after millions of years has passed. The rock process would not occur and important mineral resources would soon become scarce and eventually will run out.