volcanic ash discovered by romans about 300 bc that, when mixed with water, would harden to an unusually strong material, even when fully submerged under water?

Answer:

Geology. An oxbow lake forms when a river creates a meander, due to the river's eroding bank. After a long period of time, the meander becomes very curved, and eventually the neck of the meander becomes narrower and the river cuts through the neck, cutting off the meander and forming an oxbow lake.

Explanation:

An oxbow lake starts out as a curve, or meander, in a river. A lake forms as the river finds a different, shorter, course. The meander becomes an oxbow lake along the side of the river. Oxbow lakes usually form in flat, low-lying plains close to where the river empties into another body of water.

Answer:

The West Africa UN subregion includes the following countries:Benin, Burkina Faso, Cape Verde, Côte D'Ivoire, Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Saint Helena, Senegal, Sierra Leone, Togo .

Explanation:

Answer:

Nigeria, niger,Cameroon, malu

Answer:

Answers B and C

Explanation:

These 2 are indicative of an area -due to the "where" at the start of the question- that can be tracked and pinned on a map.

Answer: A, B and C

Explanation: image below explains

Answer:

hi live long and prosper

The water table is an underground line separating the soil's surface from the region where groundwater seeps into rock crevices and voids between sediments.

The unsaturated zone is the portion of the soil surface above the water table where water and oxygen coexist in the gaps between the sediments. Because there is oxygen in the soil, the unsaturated zone is also known as the zone of aeration. The saturated zone, when water completely fills the crevices between the sediments, is located beneath the water table. Impenetrable rock surrounds the saturated zone at its base.

The land surface above it has an impact on the water table's height and shape; it rises under hills and falls beneath valleys. Rainfall that has seeped through the soil's surface is what creates the groundwater that is found below the water table.

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The surface area of the square pyramid is \(4 + 8sqrt(6) square yards.\)

To find the surface area of a square pyramid, we need to add the area of the base to the area of the four triangular faces.

The base of the pyramid is a square, so its area is:

\(Area_base = side_length^2\)

\(Area_base = 2^2\)

\(Area_base = 4 square yards\)

Each of the four triangular faces has the same area, so we can find the area of one and then multiply by 4. To find the area of a triangle, we can use the formula:

\(Area_triangle = 0.5 * base * height\)

In this case, the base is the side length of the square, which is 2 yards. The height is the slant height of the pyramid, which is 5 yards.

However, we need to find the height of the triangle that forms one of the faces. We can use the Pythagorean theorem to do this:

\(height_triangle = sqrt(slant_height^2 - (0.5 * side_length)^2)\)

\(height_triangle = sqrt(5^2 - (0.5 * 2)^2)\)

\(height_triangle = sqrt(25 - 1)\)

\(height_triangle = sqrt(24)\)

\(height_triangle = 2 * sqrt(6)\)

Now we can find the area of one triangular face:

\(Area_triangle = 0.5 * base * height_triangle\)

\(Area_triangle = 0.5 * 2 * 2sqrt(6)\)

\(Area_triangle = 2sqrt(6) square yards\)

Finally, we can find the total surface area:

\(Surface_area = Area_base + 4 * Area_triangle\)

\(Surface_area = 4 + 4 * 2sqrt(6)\)

\(Surface_area = 4 + 8sqrt(6)\)\(square yards\)

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Answer:

Life on earth follows climate regimes, biomes develop characters in relation to climate of the region.

Explanation:

The existence of low and high pressure bands at the equator may affect how the biomes of the areas grow.

The biomes that are in areas of high pressure would be the ones that would be mostly found to adapt to dry and warm places.

The biomes in the areas of low pressure would be able to survive through the fact that there are thin air rises which causes cloud formation.

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Answer:

mid altitude zones I believe

by limiting the amount of trees

Answer:

Answer is C. This is an example of competition, and the musk ox were better adapted to the environment.

Explanation:

Answer:

This is an example of competition, and the musk ox were better adapted to the environment.

Explanation:

Sedimentary facies shift toward the sea as the sea moves out during option d regression.

Regression refers to the moving of the shoreline towards the sea which reveals the ocean floor otherwise submerged under the water. If a regression is major in its capacity, it could lead to the extinction and destruction of many organisms in the sea. Regression and its opposite phenomenon transgression have played an important role in extinction at mass extinction regarding as discovered in fossils.

The creation of the Panthea supercontinent during the late Paleozoic era is also regarded as a result of regression. Other mass regression events are the Permian-Triassic extinction and Cretaceous-Paleogene mass extinction.

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Answer:

vận chuyển nhanh,thuận tiện hơn so vói các đường khác

Explanation:

An ocean and desert is an example that separates two ecozones.

that what i think

Answer:

Mountains separate Ecozones

Explanation:

Answer:

Option D, Oil forms because of geologic heat and pressure and can be found around the world in varying amounts.

Explanation:

Oil existing beneath the earth surface is primarily due to the deposition of organic matter millions of years ago with in the deep earth crust.  

This deposition was uneven. With the temperature and pressure, the organic matter converted into fossil fuel (oil, coal etc.)  

Hence, option D is correct

Answer:

A

Explanation:

The Arctic region has experienced a faster and larger increase in temperature than the global average in the past few decades. This phenomenon is known as Arctic amplification. According to a study by NOAA, the global average temperature rose by 0.65°C (1.17°F) from 2000 to 2015, while the Arctic average temperature rose by 1.81°C (3.26°F) in the same period. This means that the Arctic warmed about 2.8 times faster than the global mean. The Arctic warming hotspot is located in the northern Barents Sea, where the sea surface temperature increased by 2.7°C (4.9°F) from 2000 to 2016, due to reduced sea ice cover and increased ocean heat transport. The Arctic greening, or the increase in plant growth and shrub expansion, is another indicator of the rapid warming in the region. A study using Landsat satellite data found that 38% of the tundra sites across Alaska, Canada, and western Eurasia showed greening from 1985 to 2016, while only 3% showed browning. The greening was more pronounced in areas with higher summer temperatures and longer growing seasons. These changes have significant impacts on the Arctic ecosystems, wildlife, and human communities.

From 2000 to 2016, the Arctic experienced a much greater increase in temperature compared to the overall global temperature rise. The Arctic has warmed at nearly twice the rate of the global average, with temperatures in some areas increasing by as much as 3-4 degrees Celsius this is due to a phenomenon known as Arctic amplification.

The change in Arctic temperatures between 2000 and 2016 was more significant compared to the change in global temperatures during the same period. This phenomenon is known as Arctic amplification, where the Arctic region warms at a faster rate than the rest of the world.

In conclusion, the difference in the change in temperatures in the Arctic and the change in global temperatures from 2000 to 2016 is that the Arctic experienced a significantly faster and more pronounced warming trend compared to the global average. This is mainly due to factors like the loss of sea ice and the albedo effect, which accelerates the warming process in the Arctic region.

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For the 12-hour clock time, 12:15 AM indicates midnight.

The 12-hour clock is the timekeeping method that is used by most countries and people around the world. It denotes time from midnight to midday as AM and from midday to midnight as PM.

The time is represented by hours, minutes, and sometimes seconds, in the 12-hour clock time. It is also known as the standard time in the United States. It is the time standard that has a 12-hour period for the day, usually from midnight to noon (12:00 p.m.), and from noon to midnight (12:00 a.m.) for the night.

In conclusion, for the 12-hour clock time, 12:15 AM represents midnight.

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Answer:

Summerside farmers market, whytte historic house museum, Red sand island. Hope this helps :)

Below are a dozen lines synthesizing how the resources and constraints of polar routes make them more regional than international routes:

The information about how the resources and constraints of polar routes make them more regional than international routes are explain thus:

Weather conditions in polar regions, such as extreme cold, high winds, and low visibility, make flying in these regions more challenging and dangerous. This requires specialized equipment and trained personnel, which makes it less accessible for international travel.

The limited number of airports and navigation aids in polar regions also restrict the number of flights and destinations that are possible. This makes it less feasible for airlines to operate regular international routes.

Lastly, The remoteness of polar regions also makes it difficult to provide the necessary support and maintenance for aircraft, which increases the operational cost and risks.

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The business custom that the mint countries of Mexico, Indonesia, Nigeria, and Turkey have in common is the practice of high inflation rates.

The term "mint countries" refers to a group of emerging economies with rapidly growing populations and economies. While there may be various similarities among these countries, one notable commonality is their struggle with high inflation rates. Inflation refers to the general increase in prices of goods and services over time, reducing the purchasing power of a currency.

High inflation rates can have significant implications for businesses, such as increased production costs, uncertain pricing, and reduced consumer purchasing power. These countries may share a history of economic instability, monetary challenges, and efforts to manage and control inflation to foster a more stable business environment.

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Answer:

TO SACRFICE MY OWN LIFE FOR PAKISTAN

Answer:

It's possible up to an extent as Imran Khan had also wanted the people to plant more trees etc. to make the country more greener etc. and if people carry on this then in the future forest areas would increase, but it depends on how many trees are being planted and in how many areas.

Several countries have coastlines on both the Atlantic and Pacific Oceans. Here are some examples:

1. United States: The United States has coastlines on both the Atlantic Ocean (East Coast) and the Pacific Ocean (West Coast). The East Coast stretches from Maine to Florida, while the West Coast extends along the states of California, Oregon, and Washington.

2. Canada: Canada is another country that has coastlines on both the Atlantic and Pacific Oceans. The Atlantic Coast includes provinces such as Newfoundland and Labrador, Nova Scotia, New Brunswick, and Prince Edward Island. On the Pacific Coast, British Columbia is the province that borders the ocean.

3. Mexico: Mexico is situated between the Atlantic and Pacific Oceans, providing it with coastlines on both sides. The Gulf of Mexico lies along Mexico's eastern coast, while the Pacific Ocean borders its western coast.

4. Colombia: Colombia is located in South America and has coastlines on both the Atlantic and Pacific Oceans. The Caribbean Sea, part of the Atlantic Ocean, borders Colombia to the north, while the Pacific Ocean lies to its west.

5. Panama: Panama is a narrow country that forms a land bridge connecting North and South America. It has coastlines on both the Atlantic and Pacific Oceans. The Atlantic side is bordered by the Caribbean Sea, while the Pacific side faces the Pacific Ocean.

These are just a few examples of countries that have coastlines on both the Atlantic and Pacific Oceans. The exact number of countries may vary depending on how the coastlines are defined and whether small territories or island nations are included.

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Mafic rocks are less dense and more fluid than ultramafic rocks

Mafic rocks have a higher proportion of silica compared to ultramafic rocks. This makes them less dense and more fluid, so they can flow more easily. Mafic rocks are a type of igneous rock that is dark and rich in iron and magnesium. Ultramafic rocks are similar to mafic rocks, but they have a lower percentage of silica and more iron and magnesium. Mafic rocks are abundant in the ocean floor, while ultramafic rocks are found in the mantle of the Earth's crust. Mafic rocks are denser than ultramafic rocks, which is why they sink lower into the Earth's mantle than ultramafic rocks. Mafic rocks are also more common on the Earth's surface than ultramafic rocks, as they are more likely to be exposed by erosion or volcanic activity. Mafic rocks are used in a variety of industries, including construction, agriculture, and manufacturing. They are commonly used as building materials, road aggregates, and fertilizers, as well as in the production of steel and other metals.

In conclusion, mafic rocks are less dense and more fluid than ultramafic rocks. They have a higher proportion of silica and are more common on the Earth's surface.

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Silicate minerals have a silicon-oxygen tetrahedron as their structural unit. and are the most common minerals on the Earth, and  are classified by the manner in which the silica tetrahedra are arranged. Therefore, the correct options are a, c and d.

Silicate minerals are a specific class of mineral made up of silicon and oxygen atoms as well as other substances like aluminum, iron, and magnesium. The silica tetrahedron, made up of one silicon atom and four oxygen atoms arranged in a tetrahedral shape, is the fundamental building block of all silicate minerals.

Silicate minerals are the most prevalent minerals on Earth and make up about 90% of the crust by volume.

The arrangement and connections between the silica tetrahedra allow silicate minerals to be divided into various groups. The framework silicates, sheet silicates, chain silicates, and isolated tetrahedra are a few groups of silicate minerals that are frequently found in nature. The correct options are a, c and d.

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The correct answer is b. All of the possible answers are correct. Silicate minerals are a diverse group of minerals that all have a silicon-oxygen tetrahedron as their structural unit.

They are the most common minerals on Earth and are classified by the manner in which the silica tetrahedra are arranged. Understanding the arrangement of tetrahedra is important for identifying different types of silicate minerals. The silicon-oxygen tetrahedron, a molecular ion, serves as the foundation for silicate minerals. Four sides and four corners make up the pyramid-like shape of a tetrahedron. The majority of the Earth's mantle and crust are made up of silicate minerals, which are the largest class of minerals on the planet. Following is a quick discussion on silicate minerals. See mineral: Silicates for a further explanation. About 95 percent of the Earth's crust and upper mantle is made up of silicates, which also exist in significant amounts in sedimentary and metamorphic rock types. Silicates are the primary component of the majority of igneous rocks.

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Answer:

Globally, subtropical circulation in the lower troposphere is characterized by anticyclones over the oceans. Subtropical anticyclones locate over subtropical belts, modulating weather and climate patterns in those regions. The Mascarene High is an anticyclone located over the Southern Indian Ocean and has a vital role in weather and climate variability over Southern Africa.

Explanation:

I hope I helped ^-^

The most influential factors in determining where people live in Southwest Asia and North Africa are water and oil resources.

These factors are further explained below:

Water resources

Water resources are the most important factor that influences the settlement patterns in this region. Water is a scarce resource in most areas of this region. Thus, the availability of water determines the growth and location of towns and cities in this region.

The Nile River, for example, provided a constant supply of water, fertile soil, and transportation for the ancient Egyptians. In addition, the development of irrigation systems allowed for the growth of agricultural activities that later became the backbone of the economy in many countries.

Oil resources

Oil is one of the most important resources in Southwest Asia and North Africa. Most of the countries in the region are oil-producing countries. The discovery of oil in this region brought about significant changes in the economic, social, and political spheres of these countries.

For example, the discovery of oil in Saudi Arabia and Iran allowed the countries to invest in modern infrastructure, such as hospitals, roads, and airports. The development of the oil industry has led to the creation of jobs and the growth of the economy, which, in turn, has attracted people to settle in urban areas.

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Answer:

Explanation:

The service industry is another name for the tertiary sector of the economy. This sector sells the commodities made by the secondary sector and provides commercial services to the general public as well as enterprises from all five economic sectors. Examples include doctors, teachers, lawyers, estate agents, travel agents, accountants and policemen.

The last question can be seen in two ways.

This country's growth would be accelerated; with so many people working these occupations, there would be greater opportunity for people to succeed.

On the other hand, if all of a country's jobs are in this industry, the government will almost certainly default on its debt. These are all high-paid occupations, therefore employing humans to do any of them would be prohibitively expensive for any government. This would most certainly stifle progress.