Which material is best as a liner for a landfill quizlet?

Which material is best as a liner for a landfill apes?

Which material is best as a liner for a landfill? Clay.

Which practice does not accelerate the erosion of soil?

Which is NOT an environmental problem associated with mining? Freshwater accounts for what percent of total water in the world? Which is a characteristic of confined aquifers?

Which four elements make up more than 88 percent of Earth’s crust?

Earth’s crust is made up almost entirely of eight elements, four of them alone claiming almost nine-tenths of this layer’s total weight: oxygen comes in at 46.6 percent by mass, followed by silicon at 27.7 percent, aluminum at 8.1 percent and iron at 5 percent.

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Which provided evidence for the change in continent location over time?

Which provided evidence for the change in continent location over time? Fossils of mammals have been found in both South America and Africa. Hot spots are located in parallel positions on both sides of the Pacific Ocean. Identical rock formations were found on opposite sides of the Atlantic Ocean.

Why are landfills lined with rubber mats and plastic material?

This prevents clogging of the drainage layer. A thick plastic layer forms a cap that prevents excess precipitation from entering the landfill and forming leachate. This layer also helps to prevent the escape of landfill gas, thereby reducing odors.

What are the components of a landfill?

There are four critical elements in a secure landfill: a bottom liner, a leachate collection system, a cover, and the natural hydrogeologic setting. The natural setting can be selected to minimize the possibility of wastes escaping to groundwater beneath a landfill. The three other elements must be engineered.

How can we prevent soil erosion in mining?

How to Prevent Soil Erosion

  1. Stopping Soil Erosion via Sustainable Farming Practices. …
  2. Protecting the Soil by Planting Windbreaks. …
  3. Stone Walls to Prevent Soil Erosion. …
  4. Reforestation Helps Protect Soils. …
  5. Conservation Tillage and Soil Erosion.

What is the removal of top soil called?

Note: Topsoil is the uppermost layer of the Earth’s surface layers which is caused by the water and wind to be removed. This process of carrying off top soil by wind and water is called soil erosion.

What is splash erosion?

Splash erosion or rain drop impact represents the first stage in the erosion process. Splash erosion results from the bombardment of the soil surface by rain drops. Rain drops behave as little bombs when falling on exposed or bare soil, displacing soil particles and destroying soil structure.

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Which metal is abundant in Earth’s crust?

Aluminum is the most abundant metal in the Earth’s crust, and the third most abundant element therein, after oxygen and silicon. It makes up about 8% by weight of the Earth’s solid surface. Earth’s crust occupies less than 1% of Earth’s volume. Oxygen is 46.6% , Silicon 27.77%, Aluminum is 8.09% and Iron is 5% .

What two elements are responsible for making 96% of the rocks on Earth’s crust?

Given the abundance of oxygen and silicon in the crust, it should not be surprising that the most abundant minerals in the earth’s crust are the silicates.

Which element has the most composition on the earth’s crust?

Oxygen: Most Abundant Element in Earth’s Crust

Oxygen, O2, is by far the most abundant element in earth’s crust at 46.6 percent, nearly half of the mass of the crust.

Which layer is most responsible for the movement of continents?

Recall that both continental landmasses and the ocean floor are part of the earth’s crust, and that the crust is broken into individual pieces called tectonic plates (Fig. 7.14). The movement of these tectonic plates is likely caused by convection currents in the molten rock in Earth’s mantle below the crust.

What evidence supports the idea that all the continents were once joined together?

There are various examples of fossils found on separate continents and in no other regions. This indicates that these continents had to be once joined together because the extensive oceans between these land masses act as a type of barrier for fossil transfer.

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What role do lichens play in weathering *?

What role do lichens play in weathering? Lichens play a role in chemical weathering because they produce weak acids. A geologist finds a substance with uniform crystalline structure and composition throughout. … both physical and chemical weathering.