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.
Mention three sources of electricity
Answer:
natural gas
coal
nuclear
A recent study indicates that a certain drug may be useful in treating a certain disease. Which of these questions is least likely to be asked by someone critically thinking about the study? How many patients tested the drug? How long did patients take the drug? How much did patients’ conditions improve with the drug? How much does the drug cost?
Although freshwater biomes cover less than 1% of the Earth's surface, they are important because ________.
Explanation:
we depend on them for drinking water
they are home to lots of species
they are the source of our irrigation for agriculture
All of the above are reasons why freshwater biomes are important.
Although freshwater biomes cover less than 1% of the Earth's surface, they are important because fresh water is the lifeblood of our planet they are the source of our irrigation for agriculture , are home to lots of species, we humans depend on them for drinking.
What is need to conserve freshwater?Fresh water is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids.
Fresh water is vital to life and yet it is a finite resource. Although critical to natural and human communities, fresh water is threatened by a myriad of forces including overdevelopment, polluted runoff and global warming.
With this in mind, WWF partners with communities, businesses and others to decrease pollution, increase water efficiency and protect natural areas to ensure enough clean water exists to conserve wildlife and provide a healthy future for all.
Learn more about how to conserve freshwater here:
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Explain the impact of human activities on soil and suggest measures to conserve it ??
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.
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Do you have some tips on how to memorize map locations on any map? I can remember some but it's very difficult to remember all of them
Answer:
I mean you could memorize them and then test yourself on the locations, and those you forgot you can keep practicing them
Explanation:
you can also use the key, which is where certain places have a specific sign to that area, that probably didnt make sense...
please help to answer thus question asap!! please
sorry I don't know the answer
When comparing groups of stars, which group has relatively low
luminosities and temperatures?
Answer: Red dwarfs
Explanation:
Red dwarfs are thought to be the coolest star out of the rest. They are also the smallest. Because they are so cool, their luminosity is low as well on account of the fact that relatively speaking, the fusion taking place on their surface is little.
Red dwarfs are the most numerous star in the universe and the most numerous in the Milky Way galaxy as well. We just can't see them with out naked eyes because of their low luminosities.
How did Japan's geography help to control its territory and keep European traders out before the mid 1800s?
PLZ help me label this
Answer:
i did not known answers to your answer and I will be mather chosen
¿Por qué es importante la red geográfica?
Answer:
Por qué sirven para ubicarse en la superficie terrestre. Es fundamental para la elaboración de mapas y es la base del GPS.
Explanation:
espero haber ayudado
What does the koala look like?
its in Wikipedia
Explanation:
you will get a lot of info from Wikipedia
In decline in ownership of all four types of gadgets reflects problems in the economy, which statement can best be inferred from the chart above?
Answer: D. The economy was struggling in much of 2009.
Explanation:
In 2009, the ownership of mp3 players seemed to dip from April to September and only recovered afterwards.
Laptop computer ownership may not have decreased but stopped growing and remained the same in the same period. Desktop computer decreased in ownership and even Cellphone ownership decreased as well.
This means that all four gadgets were affected in 2009 in a negative manner which means that the economy struggled in that time period in 2009.
(Q006) Hot, solid rock in the Earth's crust Group of answer choices is cooler than surface lava because of the pressure of overlying rock. melts at a higher temperature if volatiles such as water and carbon dioxide are added. may melt if heat is transferred to it from hot mantle rock rising up into the crust. maintains uniform composition as it melts and becomes magma.
Answer:
Hence the correct option is may melt if heat is transferred to it from hot mantle rock rising up into the crust.
Explanation:
A hot, solid rock within the crust may be a solid outer region of the world, Underneath the world Structure, lies the mantle which consists of solid rocks especially granite and basalt. The mantle is extremely hot and should melt if heat is transferred thereto from hot mantle rock rising up into the crust, therefore, forming molten magma. it's going to even be hotter (and not cooler because it was stated in option A which makes it the incorrect answer) than the surface lava due to the pressure of the overlying rock. As such, This effect is seen when an eruption occurs.
cual es la relacion entre las industrias y las nuevas tecnologías?
Answer:
Así, se produce una revolución industrial cuando los nuevos inventos e innovaciones tecnológicas transforman fundamentalmente los procesos de producción de bienes y servicios hasta tal punto que toda la sociedad se ve afectada. Para nuestros propósitos, las palabras "invención" e "innovación" se pueden utilizar indistintamente.
Explanation:
The zone of convergence between sub-tropical and polar air masses, and where frequent traveling storms take place, is along the:
Answer:
The zone of convergence between sub-tropical and polar air masses, and where frequent traveling storms take place, is along the sub-polar latitudes.
Explanation:
Convergence zones are meteorological systems that have a strong impact on global climate quality. These systems are formed by the interaction of various meteorological events that occur between different latitudes.
The convergence zone, which encompasses the subtropical and polar air masses, has an influence on the amount of storms that occur frequently. This convergence zone is located along subpolar latitudes, being strongly influenced by the humidity found in this region.
tipos de escalas sismicas
