1) what river do the vietnamese use to irrigate their crops?
2) As an exporter of rice, where does Vietnam rank?

The majority of orbits have two foci and an elliptical shape. According to Kepler's first law, a planet will circle the sun in an elliptical form, with two focal points in internal locations that contribute to the ellipse's shape.

An ellipse has two foci or focal points. A planet's total distance from these 2 focus points remains constant throughout its orbit. An ellipse also contains two symmetry lines. The longest line is the principal axis.

There are two focal points on an ellipse. The plural form of "focus" is foci. Two foci, one focus. The foci are always evenly distributed on each side of the primary axis.

An object is said to be rotating in an elliptical orbit when it travels around another object on an oval-shaped path. All planets circle the sun in elliptical patterns. The Moon similarly travels in an elliptical orbit around the Earth.

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Answer: The central government

Explanation:

A command economy, also known as a planned economy, is one in which the central government plans, organizes, and controls all economic activities to maximize social welfare. Command economies, as opposed to free-market economies, do not allow market forces like supply and demand to determine production or prices.

Leg bends, jumping rope, leg swings, shoulder/arm circles, lunges, jumping jacks, standing side bends, squats, walking or a slow jog, yoga, torso twists, lateral shuffles, butt kickers, knee bends, and ankle circles are a few further examples of warm-up exercises.

Your cardiovascular system is progressively revved up during a warmup by increasing body temperature and boosting blood flow to your muscles. Warming up may also help to lessen the possibility of injury and muscle pain. After exercising, cooling down enables a gradual return to pre-exercise blood pressure and heart rate.

Your blood vessels will expand during a decent warm-up before an exercise, supplying your muscles with plenty of oxygen. Additionally, it boosts the temperature of your muscles for maximum flexibility and performance.

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African slavery expanded in the 17th century for a number of reasons. One of the main factors was the increasing demand for labor in the New World, particularly in the Caribbean and in the colonies of North and South America. As these regions were colonized and developed, there was a need for a large, reliable source of labor to work on plantations, mines, and other forms of economic development.

At the same time, there was a declining supply of indentured servants in Europe, as conditions improved and the population grew. This meant that plantation owners and other employers in the New World were forced to look for other sources of labour. African slaves were seen as an attractive alternative, as they were believed to be stronger and more resistant to disease than European indentured servants. They were also more readily available, as the transatlantic slave trade was already well established by this time.

Another factor that contributed to the expansion of African slavery in the 17th century was the increasing demand for luxury goods, such as sugar, tobacco, and cotton, which were produced on plantations in the New World. The demand for these goods was fueled by the growth of European economies, particularly in England and France, which became major consumers of these products. To meet this demand, plantation owners needed to expand production, which required a larger and more reliable source of labour. African slaves were seen as an ideal source of labour, as they could be coerced and controlled more easily than European indentured servants.

Finally, the expansion of African slavery in the 17th century was also facilitated by the development of legal and institutional frameworks that supported the trade and exploitation of slaves. European powers such as Portugal, Spain, and England established laws and policies that supported the enslavement and exploitation of Africans, and they also provided economic incentives to encourage the trade. These legal and institutional frameworks helped to create a profitable and sustainable system of African slavery that persisted for many centuries.

Overall, the expansion of African slavery in the 17th century was driven by a combination of economic, demographic, and legal factors. The increasing demand for labour in the New World, the declining supply of indentured servants in Europe, the growing demand for luxury goods, and the development of legal and institutional frameworks that supported the trade and exploitation of slaves all contributed to the expansion of African slavery during this period.

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Option (e), The shopping bazaars are a distinctive aspect of the cultural environment in many communities in Southwest Asia.

In the Middle East, the Balkans, North Africa, and India in particular, a bazaar is a market place with numerous tiny booths or businesses.

Since the dawn of civilization, the Southwest Asia region of the world has experienced a great amount of trade and merchant activity. The nations in this region have built extremely sizable business markets. The upshot is that the shopping bazaars are a prominent feature of the cultural environment throughout the entire region.

Bazaars are one of the identifying characteristics of towns in different historical times that show a city's social and economic development. The political system or the government, which controls how a society develops, may occasionally be the target of riots and protests that take place in the middle of a bazaar.

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They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.

Continental go with the flow is the hypothesis that the Earth's continents have moved over geologic time relative to each other, as a result acting to have "drifted" across the sea bed. The idea of continental go with the flow has been subsumed into the science of plate tectonics, which researches the movement of the continents as they experience on plates of the Earth's lithosphere.

The speculation that continents might have 'drifted' was first put forward by way of Abraham Ortelius in 1596. A pioneer of the modern-day view of mobilism turned into the Austrian geologist Otto Ampferer. The concept changed independently and extra completely developed by Alfred Wegener in 1912, but the speculation changed into rejected by using many for loss of any cause mechanism.

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Answer:

Explanation:

Light is an electromagnetic radiation that can be perceived by the human eye.

Visible light usually ranges between 400-700nm corresponding to frequencies of 750-420terahertz.

They are found in electromagnetic spectrum between infrared and ultraviolet rays.

A dry climate might impact how people live by increasing: both the risk of drought and other water shortages and irrigation needs.

Regions lying within the dry climate group occur where precipitation is low. There are two dry climate types: arid and semiarid. Most arid climates receive 10 to 30 centimeters (four to 12 inches) of rain each year, and semiarid climates receive enough to support extensive grasslands.

Deserts in Africa, Saudi Arabia, Australia and the Southwest U.S. are all examples of the dry climate. There are two subcategories: semi-arid and arid. Semi-arid is dry with differing amounts of precipitation; this region gets between 10 to 20 inches of rain a year.

Dry climates are found throughout the globe, particularly in western North America, Australia, southern South America, central and southern Africa and much of Asia.

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Lord Frederick Lugard, the governor of both parts of Nigeria, signed a document consolidating the two, thereby creating the Colony and Protectorate of Nigeria.

The world's most populous black country is Nigeria. It is the center of fashion, technology, and creativity in Africa and is the second largest film industry in the world. Nigerians are renowned for their vivacious and amiable energy, which they exhibit in a variety of artistic forms.

Although English was the official tongue, it is less frequently spoken in rural areas and by those with less education.In Nigeria, sign language is utilized in three different dialects: Hausa, Bura, and Nigerian.

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Answer:

When the incoming energy is greater than the outgoing energy, the earth's temperature rises. This results in global heating and the entire planet feels the “heat”. 7.

Electrons in atoms are protons. A negatively charged subatomic particle known as an electron can either be free or attached to an atom.

One of the three main types of particles within an atom is an electron that is bonded to it; the other two are protons and neutrons. An atom's nucleus is made up of electrons, protons, and neutrons. The collection of subatomic particles known as leptons, which are thought to be fundamental or elementary particles, includes electrons in its description of particle physics. A chemical element is uniquely defined by its atoms, which are tiny pieces of substance. A negatively charged electron or electrons surround the nucleus. The positively charged, comparatively hefty protons and neutrons that make up the nucleus may be present. In the list of statements, the statement that most accurately defines an electron is that it lives in the nucleus. The protons and neutrons in an atom are balanced by the electrons, which are the subatomic particles that supply negative charge to the atom. Quarks make up protons and neutrons, but not electrons. We believe that quarks and electrons are fundamental particles that are not composed of lesser subatomic particles.

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Answer: Earth would become an ice-cold planet without the sun's heat and light.

Explanation:

Without the sun's heat photosynthesis would not take place in plants. The temperature of the Earth would drop and it would not be a liveable place for numerous plant and animal species. Humans would cease to exist. The top layers of the oceans would be frozen.

Although the frozen top layers of the oceans would insulate the deep waters below, keeping them liquid for hundreds of thousands of years, they would eventually freeze as Earth moved toward a stable average global surface temperature of about -400º F. At that point, the atmosphere would have also frozen and fallen to Earth, leaving anyone left alive exposed to the harsh cosmic radiation that travels through space.

Without the light of the sun, there would be complete darkness on the surface of the Earth.

Answer:

a - true

b - false

c - false

d - false

e - evaporation, condensation, precipitation, true

f - true

g - true

h - false, condensation

i - true

j - false, when it condenses clouds form

k - false

l - true

m - false

n - true

o - false

Explanation:

An Environmental Wisdom worldview states that  .Resources are limited and should not be wasted Thus correct option (c).

An individual's environmental ethics are their beliefs about what is right and wrong in our behavior toward the environment. There are three major environmental worldviews to consider. They are the "planetary management," "stewardship," and "environmental wisdom" perspectives.

The key to environmental sustainability, and thus to the survival of the human species, according to the environmental wisdom worldview, is learning how to work with the earth rather than thinking of ourselves as in charge of it and thus working against it.

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Answer:

What are 3 Effects of the Neolithic agricultural revolution? Neolithic populations generally had poorer nutrition, shorter life expectancies, and a more labor-intensive lifestyle than hunter-gatherers.

Explanation:

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The relative age of a rock gives scientists a numerical date that the rock was formed. This is a false statement.

The relative age of a rock gives scientists a numerical date when the rock was formed. After the drought of the 1930s, Great Plains farmers were encouraged to plant  trees in their fields to reduce soil erosion. The relative age of a rock is its age compared to other rocks. Relative age refers to the approximate age of a given object. a layer of stone. It is determined by comparing its position with other rock layers.

The process of determining whether a rock layer or geological event is older or younger than another without giving them a specific age is called relative dating. Superimposition of rock units is a very simple and straightforward method of determining relative ages. Basically, in a series of undeformed sedimentary rocks, the oldest layers are at the bottom and the youngest  at the top.

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Correct answer is :- Strata

plural strata The term "stratum" refers to a sedimentary rock layer that is bordered by two stratification planes, with the latter generated by apparent differences in the texture, grain size, or other diagnostic characteristics of the rocks above and below the plane. A lamina is a stratum with a thickness of less than one centimeter (0.4 inch), whereas a bed is one with a thickness larger than this.

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Answer: below freezing

Explanation: Energy from the Sun that makes its way to Earth can have trouble finding its way back out to space. The greenhouse effect causes some of this energy to be waylaid in the atmosphere, absorbed and released by greenhouse gases. Without the greenhouse effect, Earth's temperature would be below freezing

To determine the relative ages of the rocks, the geologist use: the law of superposition. The correct answer is option C.

Law of superposition, a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence.

An example would be that the silt back-fill of an underground drain would form sometime after the ground immediately above it. Other examples of non-vertical superposition would be modifications to standing structures such as the creation of new doors and windows in a wall.

Although part of your question is missing, you might be referring to this full question: A geologist is studying three layers of sedimentary rock in an area. The layers have not shifted from their original positions. The geologist records the relative ages of the rocks. The bottom layer is listed as the oldest. The top layer is listed as the youngest. What did the geologist use to determine the relative ages of the rocks?

A. mineral content

B. radioactive decay

C. the law of superposition

D. the principle of unconformity

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The  type of cloud formation that occurs at the highest altitude is cirrus clouds.

The cirrus clouds refers to a short, detached and hair-like clouds found at high altitudes. These clouds are wispy, has silky sheen or look like tufts of hair. In the daytime, they are whiter than other cloud in the sky. While Sun is setting or rising, they may take on the colours of the sunset.

The Cirrus clouds form from the ascent of dry air, making small quantity of water vapour in the air to undergo deposition into ice. They are made up completely of ice crystals which provides their white colour and form in a wide range of shapes and sizes.

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Answer:

A vent

Explanation:

it's the opening at the surface of a volcano where eruptions occur.

Phosphorus repositories are tracked down fundamentally in soil and sedimentary rocks, in light of the fact that dissimilar to different supplements that cycle through the biosphere, phosphorus can't be tracked down in that frame of mind in the vaporous state.

Phosphorus moves in a cycle through rocks, water, soil and silt, and creatures. Over the long haul, downpours and enduring reason rocks to deliver phosphate particles and different minerals. This inorganic phosphate is then appropriated in soils and water. Phosphorus can be tracked down on earth in water, soil, and dregs. Dissimilar to the mixtures of other matter cycles phosphorus can't be tracked down in the air in the vaporous state. This is on the grounds that phosphorus is typically fluid at ordinary temperatures and tensions. It is basically going through water, soil, and silt.

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It restricts freedom.

It may ignore societal needs.

It slows down innovative developments.

It causes black markets to explode.

It offers no competition.

Explanation:

1. It restricts freedom.

Due to the fact that this type of economic system is tied to communist countries, it is no surprise that it also takes the freedom away from the people and puts full control in the hands of the government alone. People can not choose their careers based on their skills and interests; rather, it is based upon what the government forces them to do. All jobs are aligned with needs at a time, and people have little freedom of choice. This major downside to a command economy can lead to discontented citizens.

2. It may ignore societal needs.

Command economy often ignores the needs of the society for its betterment. Workers will not be given the options on where they can work or where they can move.

3. It slows down innovative developments.

Unlike a free market that encourages change and innovation, a command economy does not offer this advantage. Since the government controls the market, it does not make innovation a priority or does not encourage it all in all. This is because it controls all aspects of production and leaves no room for people to make it better, leading to a workforce that is less motivated to create higher-quality products or services.

4. It causes black markets to explode.

Because of restrictions by the government, some products and services are not offered in the command economy, so they would be offered on black markets.

5. It offers no competition.

Competition on the market is one of the main forces of improvement, but in a command economy, there is little competition. The government owns all the industries and does not encourage competition or actually exerts effort to eliminate it. The benefits gained from competition are not seen in this type of market.

Glaciers can carve out large valleys through mountains.

Glaciers move slowly over land and, as part of the cryosphere, interacts with the earth's surface through weathering, erosion and deposition.

Although moving and working slowly, glaciers are major forces of erosion. It can take glaciers years to scratch a bedrock but it can also carve out huge valleys hundreds of kilometers long over thousands of years.

Valley glaciers is a type of glacier which forms when snow and ice buildup in a mountain valley and the high mountains keep the glaciers from spreading out in all directions, and gravity pulls this glacier downhill.

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Although it had many uses outside of Political Geography, the most significant technological development of the late 20th century in this area resonated particularly with geographers.

Geocoded data is captured, stored, checked, integrated, manipulated, displayed, and analyzed using geographic information systems (GIS), which combine hardware and software. These systems accept data input and show it as two- or three-dimensional maps and other diagrammatic formats (i.e., information with coordinate referencing, such as latitude and longitude). Even if two or more maps were created using distinct spatial grids, they can be combined for analysis by being overlay, for example, a relief map and a map of wells.

Although it had many uses outside of geography, the most significant technological development of the late 20th century in this area resonated particularly with geographers.

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With a diameter of 1,380 miles (ca. 2,221 km), Typhoon Tip broke the previous record of 700 miles (ca. 1,127 km) set by Typhoon Marge in August 1951 as the largest tropical cyclone on record. Tip was almost as big as the contiguous United States at its largest.

Stay away from the porches, doorways, and windows. DO NOT lean on concrete walls or floors during a thunderstorm. Lightning could conduct through any metal wires or bars embedded in concrete walls or floors.

Therefore, A breeze is the name for the wind when it blows gently and slowly. On the other hand, a storm is referred to when the wind is blowing ferociously and quickly. A low-pressure system is a storm.

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The shopping bazaars are a distinctive aspect of the cultural environment in many communities in Southwest Asia. As a result, choice (D) is the appropriate approach.

Southwest Asia is a subregion of Asia that is bordered by the Indian Ocean and the Persian Gulf on the south and southeast and the Mediterranean Sea, the Sinai Peninsula, and the Red Sea on the west. The region extends northward to the Black Sea and the Caspian Sea.

Sloping plains can be found in the marginal downwarps of an ancient platform that makes up much of southwest Asia, much like much of southern Asia: the northern pieces of Gondwanaland. Arabian Peninsula and Mesopotamia make up its main parts.

Bangladesh, India, Bhutan, the Maldives, Nepal, Pakistan, and Sri Lanka are the seven countries that make up Southwest Asia.

Hence, option (D) is accurate.

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