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jeka57 [31]
3 years ago
7

The image below shows people using sandbags as a means to contain a rapidly rising river. Which process of soil erosion is being

prevented by the activity shown below? (2 points)
Photograph of people placing sandbags along the shore of a river.

Public Domain


Wind

Gravity

Glaciers

Moving water
Biology
1 answer:
Brrunno [24]3 years ago
3 0
<h2><u>Answer: </u></h2>

<u>Erosion:</u> is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.  A similar process, weathering, breaks down or dissolves rock, but does not involve movement.Erosion is the opposite of deposition, the geological process in which earthen materials are deposited, or built up, on a landform. Most erosion is performed by liquid water, wind, or ice .  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.

<u>Public domains:</u>VegetationThe simplest and most natural way toprevent erosion is through planting vegetation. Plants establish root systems, which stabilizes soiland prevents soil erosion. Geotextiles: Using geotextiles is an effective method because it also stabilizes soi .

<u> People placing sandbags along the shore of a river:</u>

The use of sandbags is a simple, but effective way to prevent or reduce floodwater damage. Properly filled and placed sandbags can act as a barrier to divert moving water around, instead of through, buildings. ... Tied sandbags are generally easier to handle and stockpile.

FloodSax Sandless Sandbags are reusable only in fresh water.FloodSaxreusable sandbags can be used a second or third time, depending on how clean the liquid it has absorbed. Click here to purchase FloodSax reusable sandless sandbags now.


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Hello!

An initial observation is the first thing a scientist notices about a topic before conducting the experiment. We can see that it is the first thing in the paragraph in this case, that dandelions grow as unwanted weeds in many lawns.

The hypothesis is the guess about the result of an experiment made before the experiment is conducted. In this case, it is that a weed killer (Killimal) would kill all the dandelions while leaving the grass healthy. This is not specifically a guess made by the scientist, but more like a prediction he wanted to verify.

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The dependent variable is the variable being measured, and the one being affected by the independent variable. His observation would be whether the grass and dandelions would be killed. This is because the weed killer would be directly affecting whether or not these would be killed.

The control variables are ones which are kept the same in the experiment as to not interfere with the final results. In this case, it would be the density of dandelions, the amount of sunlight, and the amount the plants were watered. These were kept exactly the same, as they could've affected the dependent variable if changed.

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