(a) What is irrigation agriculture?
(b) Discuss three factors which favour
irrigation agriculture in Nile Basin,
(c) List two importance and two
problems of irrigation.
(a) Describe the methods of irrigation
agriculture in either the Nile valley or the
Niger valley, (b) Give reasons for the
irrigation agriculture in any one of the
river valleys. (c) Discuss the problems
associated with irrigation agriculture in
the river valley you have chosen above

Answers

Answer 1

Explanation:

Basin or flooding mathod - involves the seasonal flooding of the nearby lands in the Nile Valley during which the flood water is trapped and cannot flow back into the Nile Valley

(ii) Perennial Method - involves the damming of rivers to create artificial reservoirs which can supply water to irrigation canals at any time of the year

(iii) The Shaduf Method - The oldest method during which farmers collect water from river channel, either with a bucket or a water bag, and pour it on their farms.

(b) Reasons for irrigation agriculture in Nile valley are:

(i) To supply water to the soil as little or no rainfall is experienced around these areas

(ii) To fight drought as Egypt experiences desert climate

(iii) To produce crops all year round.

(c) Problems associated with irrigation agriculture in the Nile Valley are:

(i) There is the problem of fluctuation in the level of water used for irrigation purposes

(ii) Presence of excess of mineral salt like sodium which are injurious to plant growth

(iii) Over-flooding could be disastrous

(iv) Construction of many dams disturbs normal flow of water.


Related Questions

Question 4 of 26 How are guyots and seamounts related? A. A guyot is a seamount that has a flat top because of wave action. B. A guyot forms when a seamount becomes completely surrounded by a coral reef. C. A seamount forms when a guyot becomes completely surrounded by a coral reef. D. A seamount is a guyot that has a flat top because of wave action.​

Answers

Guyouts and seamounts, are related backseats there are bu.oth

_______ should be located on the floor of computer rooms as well as under raised floors, and should cut off power automatically in the event of a flood.

Answers

Answer:

"Water sensors" is the right answer.

Explanation:

A gadget instead for different purposes utilized towards sensing of water table or height of flow is determined as Water sensors.These sensors are mounted upon this water spring or even just pipelines for measuring the flow rate as well as for calculating the quantity of water flowing across the pipeline.

tipos de escalas sismicas

Answers

¿Escalas sísmicas?
Escala Modificada de Mercalli.
Escala de Richter.
ESCALA DE FUJITA.

1. Along the coast of South America, some of the largest earthquakes ever recorded happen. Many of these quakes are greater than 9.0 on the moment magnitude scale. Why do you think they experience these large quakes?


2. Where in the ocean, is the new oceanic crust being created?
3. How is the new oceanic crust created? Write down at least 3 events that occur while the oceanic crust is being created.


4. As new crust is forming in these areas, where does it move, and how quickly does it move?

5. If a new crust is continually being created, then the crust must be destroyed at some location for the Earth to remain its current size. Where is this crust destroyed and how is it destroyed?


6. Name 3 geologic features that are a direct result of plate tectonics.

7. Go outside your location and find something that you can use as evidence of plate tectonics. Write down what you see and how you think plate tectonics was involved in the creation. If you are in a flat prairie and can see nothing but vegetation around, look at a photo of a location to answer this question.

Answers

Answer:

1. Complex fault interaction, 2. Atlantic ocean, 3. divergent plate boundaries and mid oceanic ridges, 4. Rate of movment is 1 cm per year due to rapid spreading of lavas. 5. Upwelling of magma, 6. faults, folds and volcanism.

Explanation:

The location of South America influences the development of earthquakes. Having s narrow continental shelf the plates of pacific and south America collide with each other.  The mid oceanic ridge marks the new oceanic crust that is continuously being created as plate expand and the lithosphere becomes cooler.  The presence of the divergent plate boundaries leads to their creation. The rate of movment of the plate is about 1 cm per year.

why is the ocean across heavier than the continental crust
plz explain and I iwll give u branist and rate u 5 star and also follow u plz help me ​

Answers

Explanation:

Layers that are less dense, such as the crust, float on layers that are denser, such as the mantle. Both oceanic crust and continental crust are less dense than the mantle, but oceanic crust is denser than continental crust. This is partly why the continents are at a higher elevation than the ocean floor.

what are evidence that the himalayas are still rising
plz help me with a good explanation
1I will give u branist and rate u 5 star and also give u like.I will also follow u back​

Answers

Explanation:

The Himalayas are still rising by more than 1 cm per year as India continues to move northwards into Asia, which explains the occurrence of shallow focus earthquakes in the region today. However the forces of weathering and erosion are lowering the Himalayas at about the same rate.

Short Answer
Please provide a brief response to the following question.
What areas of science and medicine did the ancient Egyptians study?
The Egyptians studied

Answers

The answer is d I took the test

Which statement explains how weight is different from mass?

Mass is a varying property.
Mass is measured in newtons.
Weight is always greater than mass.
Weight is a measure of gravitational pull.

Answers

Answer:

Weight is a measure of gravitational pull

Explanation:

Weight is a measure of gravitational pull

Answer:

weight is measured of gravitational pull

Explanation:

weight is measured of gravitational pull

How is the tropical savanna climate different than the humid subtropical climate?

Answers

humid subtropical climate are usually somewhat wetter than winters with munch rain falls tropical cyclones also enhance warm season rainfall in some regions

give the standard mountain where A= 2,00 feet B = 12,000 feet and C = 4,000 feet. IF the temperature at A is 82 degrees F and the dew point temperature is 60 degrees F , what is the elevation in feet of X?

Answers

Answer:

A standard temperature lapse rate is when the temperature decreases at the rate of approximately 3.5 °F or 2 °C per thousand feet up to 36,000 feet, which is approximately –65 °F or –55 °C. Above this point, the temperature is considered constant up to 80,000 feet.

15) What continent is touching the eastern border of Europe?
A. North America
C Africa
B. Australia
D. Asia

Answers

Answer:

the correct answer is D. Asia

Explanation:

your welcome

Pls Help meeeee There is an old saying, “Earthquakes don’t kill people, buildings do.” Write a paragraph to explain the meaning of this saying. (5)

Answers

Explanation:

due to fall of buildings movement of plates of earth

“earthquakes don’t kill people, buildings do” is simply saying that it’s not the direct earthquake that could cause death, it’s the after effect of the earthquake.

Which US state is losing land at a faster rate than anywhere else on the planet? At what rate?

Answers

Answer:

The Mississippi River Delta and coastal Louisiana are disappearing at an astonishing rate: a football field of wetlands vanishes into open water every 100 minutes. Since the 1930s, Louisiana has lost over 2,000 square miles of land, an area roughly the size of Delaware. Many factors have contributed to this collapse.

HELP PLSSSSSSSSSSSSSSSSSSS

Answers

The answer should be C
The answer should be C

Yusef believes that his town is a very friendly community because it is situated in a valley, making it more challenging to travel in and out. He thinks the cultural characteristics arise out of natural geography. What theory is Yusef’s idea MOST aligned with?

Answers

Answer:

Isolated cultural methods.

Explanation:

The next large earthquake on the San Andreas Fault zone in California is considered likely to be ________.

Answers

Answer:

The next large earthquake on the San Andreas Fault zone in California is considered likely to be in Southern California because it has been nearly 300 years since the last major earthquake in that area.

1-cite evidencias de que a milhoes de anos areas pode ter havido um supercontinente:o Pageia (obs:nao chute a resposta e nao Como que a resposta erranda pelo Amor de Deus)

Answers

Answer:

Pangea es el supercontinente que existió hace 250 a 210 millones de años, desde que se originaron todos los continentes actuales. Pangea estaba rodeada por un océano, Panthalassa. Pangea era una gran masa de tierra que finalmente se rompió por la tectónica de placas.

Durante el Jurásico, Pangea comenzó a desintegrarse. Primero, se formó una brecha de tres brazos entre lo que se convertiría en los continentes de África, América del Sur y América del Norte. La actividad volcánica creó una cuenca que luego se convertiría en el Océano Atlántico. Pangea se dividió primero en dos paleocontinentes, Laurasia y Gondwana (América del Sur siguió siendo parte de Gondwana durante algún tiempo). Después de eso, ambos paleocontinentes se dividieron aún más en los continentes de hoy.

describe and explain the characteristics of a stevenson screen ​

Answers

Answer:

Robert Louis Stevenson, in full Robert Louis Balfour Stevenson, (born November 13, 1850, Edinburgh, Scotland—died December 3, 1894, Vailima, Samoa), Scottish essayist, poet, and author of fiction and travel books, best known for his novels Treasure Island (1881), Kidnapped (1886), Strange Case of Dr. Jekyll and Mr. Hyde (1886), and The Master of Ballantrae (1889).

The Stevenson screen ​is painted white to refract the sun's rays more effectively.

What is Stevenson screen?

Stevenson's screens are indeed painted white to refract the sun's rays more effectively. The skylights sides allow air to circulate around the thermometers. A psychrometer generator that pushes external air across the equipment inside helps the airflow in some places.

Its goal is to offer a consistent environment for measuring temperature, humidity, dew point, and atmospheric pressure.

A Stevenson screen's aim is to protect thermometers against precipitation and direct sunlight from outside sources, while enabling air to move freely around them. As a result, the screen provides a virtually unified enclosure that is the same temperatures as the air outside.

Learn more about Stevenson screen here;

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Totalitarian governments share which of the following beliefs?
A
Dissension is necessary for progress.
В.
Human rights are universal and inalienable.
C.
Free and fair elections are necessary for political stability.
D.
The needs of the state supersede individual rights.

Answers

Answer:

D

Explanation:

All the other answers would highlight democratic or libertarian ideals

Which belief is shared by all Abrahamic faiths?
A. The Jews are the chosen people.
B. The New Testament is the final word of God.
C. Muhammad wrote the Torah.
D. God judges a person after his or her
desagh.
h,

Answers

Answer:

D

Explanation:

plss brainliest me thanks

Line segment WX is the radius of circle X, and line segment ZY is the radius of circle Y. Points W, X, C, Y, and Z are all on line segment WZ.

What is the area of circle C, which passes though points W and Z?

81Pi units squared
164Pi units squared
324Pi units squared
1296Pi units squared

Answers

C.324pie unit squared

Explain the impact of human activities on soil and suggest measures to conserve it ??​

Answers

Answer:

These include land use change, land management, land degradation, soil sealing, and mining. The intensity of land use also has a great impact on soils. Soils are also subject to indirect impacts arising from human activity, such as acid deposition (for example, sulphur and nitrogen) and heavy metal pollution

List out three methods of soil conservation

Following methods are normally adopted for conserving soil:

Afforestation: One of the best ways to conserve soil is to increase the area under forests. ...

Checking Overgrazing: ...

Constructing Dams: ...

Changing Agricultural Practices: ...

Explanation:

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The impact of human activities on soil are that some human activities have clear direct impacts.

These include land use change, land management, land degradation, soil sealing, and mining. The intensity of land use also has a great impact on soils.

Measures to conserve it include crop rotation, cover crops, conservation tillage and planted windbreaks

What is land degradation?

Land degradation is a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land.

It is viewed as any change or disturbance to the land perceived to be deleterious or undesirable.

Natural hazards are excluded as a cause; however human activities can indirectly affect phenomena such as floods and bush fires.

It is estimated that up to 4% of the world's agricultural land is seriously degraded.

What is crop rotation?

Crop rotation is the practice of growing a series of different types of crops in the same area across a sequence of growing seasons. It reduces reliance on one set of nutrients, pest and weed pressure, and the probability of developing resistant pests and weeds.

A well-designed crop rotation can reduce the need for synthetic fertilizers and herbicides by better using ecosystem services from a diverse set of crops. Additionally, crop rotations can improve soil structure and organic matter, which reduces erosion and increases farm system resilience.

To learn more about crop rotation here,

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2. If the rocks outside of Gubbio, Italy used to be at the bottom of an ocean, how are they now part of a mountain?

Answers

Answer: this is caused by Tectonic forces uplifted the land.

(if this is right mark brainliest :))

Analise as alternativas sobre as características dos continentes terrestres e marque a única alternativa INCORRETA: * a) A Asia é o continente mais extenso, além de abrigar o maior contingente populacional. b) O continente americano é subdividido em América do Norte, América Central e América do Sul. c) A Oceania é o menor continente terrestre. d) Os países da Europa apresentam os mais elevados Índices de Desenvolvimento Humano (IDH) do planeta. e) A Africa apresenta diversos problemas socioeconômicos (subnutrição, desemprego, alta taxa mortalidade infantil, etc.), sendo o único continente com baixo padrão de vida.

Answers

Answer:

La opción incorrecta es D. Si bien es cierto que África presenta diversos problemas socioeconómicos, no es cierto que se trata del único continente con bajo nivel de vida.

Así, si bien la mayoría de los países africanos están sumidos en la pobreza, esta condición se encuentra en todos los continentes, con ejemplos como Ucrania o Moldavia en Europa, Haití o El Salvador en América, Afganistán o Birmania en Asia, o las Islas Salomón en Oceanía.

amongst three layers of earth interior. Which layer do you think is the most important one? justify​

Answers

Answer:The crust is the most widely studied and understood. Mantle is hotter and capable of flowing. The outer and inner core are much hotter with great pressures that you can be squeezed into a ball smaller than a marble if you are able to go in the center of the Earth.

The crust because it's the only one that can support life

What shape do you think the earth is?
Sphere, flat, cube, prism, ect. And explain why
No wrong answers
Also is the whole world a simulation?????!!!!

Answers

Answer:

Sphere

Explanation:

The Earth is massive enough that the pull of gravity maintains its roughly spherical shape. Most of its deviation from spherical stems from the centrifugal force caused by rotation around its north-south axis. This force deforms the sphere into an oblate ellipsoid...

Are the prevailing winds winds that always blow in a certain direction?

Answers

Answer:

Prevailing winds are winds that blow from a single direction over a specific area of the Earth. Prevailing winds blow east-west rather than north-south. This happens because Earth's rotation generates what is known as the Coriolis effect

Explanation:

np

Prevailing winds are winds that blow from a single direction over a specific area of the Earth. Areas where prevailing winds meet are called convergence zones. Generally, prevailing winds blow east-west rather than north-south. This happens because Earth's rotation generates what is known as the Coriolis effect.

Figure 1 shows a seaside cliff. Figure 2 shows the same cliff after a short period of time has passed. What caused the change from figure 1 to figure 2 A.Rainfall only B.Ocean waves only C.Wind D.Rainfall and ocean waves

Answers

Answer : B

Explanation: the change is caused by erosion that is caused by strong ocean waves bashing up against the cliff.

Answer:

The correct answer is D) Rainfall and Ocean waves.

Explanation:

The diagram indicated is a perfect example of coastal erosion.

Coastal erosion happens when land is lost or displaced. This can be short-term or long-term and may involve the elimination of sediment and rocks along the coastline resulting from the action of waves, currents, tides, wind-driven water, waterborne ice, or other impacts of storms.

The four main stages of coastal erosion are corrosion, abrasion, hydraulic action, and attrition.

The United States for instance experiences a lot of coastal erosion in all its regions. More specifically, barrier islands in the southeast and the Great Lakes record 25 feet and 50 feet recession rates respectively.

Cheers

The disadvantages of living close to a river delta

Answers

Answer:

Flooding.

Water Pollution from nearby or upstream

Explanation:

Catchment developments, as well as population and economic growth have had a profound impact on all deltas. These heavily farmed environments and their populations are increasingly vulnerable to a growing risk of pollution, coastal floods, wetland loss, shoreline retreat and loss of infrastructure

Do you agree with the "one couple, one child" policy? Why or why not?

Answers

Answer:

yes

Explanation:

because this is freedom no There is no right or wrong answer, no real answer

I do not agree with that policy because they should be aloud to have more children if they want to have a big family, others may say they agree because it increases the population.
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