Explanation:
Type of salinity and their prevention
There are different types of salinity, each with different causes and varying treatment.
Dryland salinity is the accumulation of salts in the soil surface and groundwater in non-irrigated areas. It is usually the result of three broad processes:
groundwater recharge (or deep drainage)
groundwater movement
groundwater discharge.
Often it results from replacing deep-rooted native vegetation with shallower-rooted crops and pastures, which take up less water. Unused rainwater leaks into the ground causing groundwater to rise and dissolve salts stored deep in the soil. The salty water may:
rise to the surface causing waterlogging and/or scalding
emerge at the break of a slope as seeps
flow over the surface or underground into streams and rivers.
Irrigation salinity
Irrigation salinity is the rise in saline groundwater and the build-up of salt in the soil surface in irrigated areas. It is caused by using large volumes of irrigation water that locally raise groundwater levels and mobilise salt. Irrigation salinity is made worse when water used to irrigate is from salty sources.
Irrigation salinity can be controlled by using water efficiently. Crops should receive only the amount of water they can actually use. Reducing water usage in irrigated areas generally requires changes to irrigation infrastructure and technology, and better matching of crops to soil types.
Urban salinity
Urban salinity is a combination of dryland and irrigation salinity processes and is mainly caused by rising groundwater bringing salts to the land surface. The rise in groundwater is caused by blocked or changed natural drainage paths due to:
urban development
over-watering of parks and gardens
leaking pipes, drains and tanks.
In the urban environment, other sources of salt that can contribute to urban salinity include:
effluent
building materials
industrial waste water
fertilisers and chemicals.
Industrial salinity
Many industrial processes have the potential to increase salinity levels in rivers. Examples are:
saline water from mines (working and abandoned) from groundwater seepage and from rainwater coming into contact with mine workings or spoil
discharged cooling water from coal-fired power stations that has been partly evaporated, concentrating the salt content
effluent being discharged.
Which province/territory has the highest population density? Why do you think this is so?
Answer:
Prince Edward Island
Prince Edward Island is the most densely populated province in Canada. Canada is the second largest country in the world after Russia.
...
Canadian Provinces and Territories by Population Density.
Rank Province/Territory Population Density (People/Km Sq)
1 Prince Edward Island 24.7
2 Nova Scotia 17.4
3 Ontario 14.1
4 New Brunswick 10.5
Using this chart, which country is MOST likely to have the highest standard of living?
A) Kenya
B) Sudan
C) Nigeria
D) South Africa
Answer:
D
Explanation:
south Africa should have the highest standard of living
The country that is most likely to have the highest standard of living is South Africa.
What determines a standard of living?There is a correlation between education literacy and high standard of living because good education leads to a better overall economy.
Because South Africa have the highest education literacy, then, it is the country that that is most likely to have the highest standard of living among the others.
Therefore, the Option D is correct.
Read more about standard of living
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Agriculture is________
Answer:
Agriculture is the art and science of cultivating the soil, growing crops and raising livestock.
Explanation:
It includes the preparation of plant and animal products for people to use and their distribution to markets.
Agriculture provides most of the world’s food and fabrics. Cotton, wool, and leather are all agricultural products. Agriculture also provides wood for construction and paper products.
These products, as well as the agricultural methods used, may vary from one part of the world to another.
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Some minerals have special
properties. Which of these is a
special property that not all
minerals have?
C. Radioactivity
Hope this helps! :)
Answer:
radioactivi
Explanation:
i hope u understand
ways of making a living is called an ____
Answer:
income (not sure)
Explanation:
....................
What causes global convection currents to form?
O A. Unequal heating of Earth's surface
B. Differences in elevation on Earth
C. Earth's local winds
D. Earth's spin
Before the Europeans came, trade between Africa and the Middle East and India was controlled by pirates. true or false
Answer:
False
Explanation:
India was controlled by foreign Invader (Mughal empire).
Day and night are caused by the Earth’s __________.
A.
biosphere
B.
rotation
C.
revolution
D.
atmosphere
Please select the best answer from the choices provided
A
B
C
D
The first mosque in Great Britain was built in 1889. Today, there are over 1,500 mosques in the country.
Which factor most contributed to this culture change?
Increased trade with Muslim countries
Muslim refugees from war-torn countries
Muslim immigrants from former British colonies
Government efforts to promote religious diversity
Muslim immigrants from former British coloniesAnswer:
1889
The Shah Jahan Mosque at Woking was Britain's first purpose-built mosque. It was established in 1889 by the Jewish ex-Registrar of the University of Punjab, Gottlieb Leitner, with financial backing from the Begum Shah Jahan of Bhopal.
Explanation:
The Shah Jahan Mosque in Woking was the first purpose-built mosque in Britain, and was built in 1889.
Explain what is meant by aerobraking.
please help
Aerobraking is a spaceflight technique wherein an orbiting spacecraft brushes against the top of a planetary atmosphere. The friction of the atmosphere against the surface of the spacecraft slows down and lowers the craft's orbital altitude.
Answer:
Aerobraking is a spaceflight technique wherein an orbiting spacecraft brushes against the top of a planetary atmosphere. The friction of the atmosphere against the surface of the spacecraft slows down and lowers the craft's orbital altitude.
Explanation:
A boy is flying a kite. His kite string is extended 50 meters long. The boy is 1.7 meters tall, and the angle of elevation of the kite to the boy's hands is 12°. How high is the kite flying above the ground?
Answer:
12.1 meters
Explanation:
Please check the attached image for a diagram of the question
We are given the value of the hypotenuse and we are to determine the value of the opposite side. Thus, we would use sin
Sin = opposite / hypotenuse
sin 12 = opposite / 50
0.2079 = opposite / 50
opposite = 0.2079 x 50 = 10.4 meters
height of the kite above the ground = 10.4 + 1.7 = 12.1 meters
3. What are the most common languages in North America?
Answer: are English, Spanish, and to a lesser extent French, and especially in the Caribbean, creole languages lexified by them.
Explanation:
Describe how the rotation of Earth around its own axis and its revolution around the sun affect sunrise and sunset. Explain why will this be different from outer space.
Answer:
since earth rotates on a tilted axis we experience night and day, and also different seasons. while being tilted on our axis we can experience longer days and shorter night when pointing towards the sun (summer), and shorter days and longer night pointing away from the sun (winter). you would experience a difference in space because you wouldn't be rotating on a axis any more. you would experience the same night and day patterns every day.
Explanation:
hope this helps!
Radiation is a concern with travelling away from the Earth.
What kind of radiation is concerning to astronauts in this journey? ( the trip to Mars)
Answer:
ionizing radiation
Explanation:
the radiation from the sun is ionizing.
Describe the components that made up Earth's first atmosphere.
Answer:
Earth original atmosphere was probably just hydrogen and helium because these were the main gases in the justice guess around the sun from which planets from the Earth its atmosphere where is very hot molecules of hydrogen and helium move really fast especially when
What element is often found on tables?
headers
legend
horizontal axis
vertical axis
Answer:
Legend
Explanation:
Just took the test on Edge
which important fossil is most likely to be found in the triassic age rocks in the Newark lowlands? .eurypterid .mastodont .coelophysis .Naples tree
Answer:
Coelophysis is most likely to be found in the triassic age rocks in the Newark lowlands.
what are two characteristics of the CBD
Answer:
Some of the key characteristics of CBDs include:
High concentration of offices, banks, financial institutions, and so on.
High density and high-rise buildings.
High land values.
Lack of open and/or green space.
Department stores and high-end shops.
Multi-storey car parks.
Explanation:
plz mark me as brainlist
hope it HELPS..!!
ANSWER:
three characterstics of the cbd:
1. High land values.
2.Lack of open OR green space.
3. High density and high rise buildings.
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Which of the following best describes what would have to change to
transform a direct democracy into a parliamentary democracy?
A. An individual would have to take direct control of the government.
B. Executive leaders would have to be chosen from the legislative
branch.
C. An elite group would have to take control of the government.
D. An assembly of all citizens would have to take control from an
elected group
Answer: B. Executive leaders would have to be chosen from the legislative branch.
Explanation:
A parliamentary democracy is one where the executive government is controlled by the party that has the largest representation in the nation's legislative branch, the Parliament.
To be a parliamentary democracy therefore, an executive leader would have to be chosen from the legislature by the members of the party in the majority. This ensures that the legislature and the executive work closer together. Countries like Britain and Israel are parliamentary democracies.
According to Greek mythology, the
was created by Hermes.
A. Aulos
B. Kithara
C. Lyre
D. Lute
Answer:
Lyre
Explanation:
please brainleist my answer
A bench mark can indicate.......on a map
what do you mean by environment??
Answer:
Environment is the conditions in a place we live or work that affects or influence our behavior and development and the things around us.
Answer:
environment is the physical and biological world around us.
hope it helps
caracteristicas del pasado
depende que dejaste ........
Define the term climate change and briefly explain why it is important
Answer:
Climate change is the long-term alteration of temperature and typical weather patterns in a place. Climatic Change is important since it helps determine future climate expectations. Through the use of latitude, one can determine the likelihood of snow and hail reaching the surface. You can also be able to identify the thermal energy from the sun that is accessible to a region.
Look at The Baptism of Christ, an engraving done by Lucas van Leyden in
1510. Why is the baptism of the adult Jesus hidden in the background?
Answer:
I believe the answer is C
Explanation:
Non required
The reformation made it necessary to push the relgious messages in the art to the background. Hence option C is correct.
What is the Baptism of Christ?As Jesus came to john baptist and was baptizing the people he tried to change his mind but will do all that God requires.
As soon the god that is Jesus was baptist he came out of the water. The image depicts people surrounded by the water and reaffirmation made it necessary for pushing the religious message.
Find out more information about Baptism of christ.
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Differentiate between renewable and non-renewable resources. Give examples of
both. What are the dangers in depending too much on non-renewable resources?
Renewable resources can be replaced by natural processes as quickly as humans use them. Examples include sunlight and wind.
Nonrenewable resources exist in fixed amounts. They can be used up. Examples include fossil fuels such as coal.
Greenhouse gas emissions
Perhaps the most well-known impact of using non-renewable energy sources is the emission of greenhouse gases, in particular carbon dioxide and methane, which contribute to climate change [1]. Different types of non-renewable energy fuels emit different levels of greenhouse gases.
13
The continent of Africa was heavily colonized by Europeans, which led to many consequences. One positive consequence was that sanitation
methods Improved, greatly increasing life expectancy. What type of colonial influence would have made this possible?
OA political
OB.
technological
Oc religious
OD.
social
Answer:
B. Technological
Explanation:
Improved sanitation and medicine relates to technological advances
Using the map of Australia, what is the MOST precise location of Melbourne?
A) South East
B) Southeast of Canberra
C) 35S 120E
D) 37S 147E
Answer:
I think its B
what are the things that a spacecraft should do so it can overcome the challenges of intergalactic travel?
Answer:
If a spacecraft is in space for a long time, radiation is a problem. Designers must figure out a way to protect astronauts from the radiation.
Answer:
Food and Water,Proper Propulsion,Radiation Protection,etc are the things that a spacecraft should do so it can overcome the challenges of intergalactic travel.
Explanation:
Star Wars would have you believe that the greatest challenges to space travel is asteroids, lack of resources like water or fuel, or even the threat of unfriendly, intelligent alien life. But in reality, scientists are finding that the biggest obstacle to today's space travel is dust.
Weather is a result of different air masses coming in contact with each other. Use the fronts and pressure systems on the weather map to identify the weather condition that is labeled correctly.
Answer:
Mild weather.
Explanation:
Mild weather is the weather that labeled correctly because the regions nearer to the ocean or sea have mild weather condition. Due to near of water, the coastal regions experiencing warmer winters and cooler summers as compared to regions that are situated far from the ocean or sea. This is a result of ocean temperatures that taking longer to warm up and cool down than the adjacent landmass.
Answer:
mild weather
Explanation:
took the test got it right
