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Over [174]
3 years ago
5

(a) What chemical form of aluminium would be expected to dominate in a soil with pH 4.5

Geography
1 answer:
Liono4ka [1.6K]3 years ago
8 0

Explanation:

(a)

There is inverse relation between concentration of aluminium and pH value and it can lead to aluminium toxicity. In this case it will dominate in the form of Hydroxy- aluminium, Al³⁺ cation and polynuclear species.

(b)

Various minerals are brought to the soil during its formation . As we know the pedogenesis process starts due to erosion of the rocks and rocks contain various minerals, of which aluminium is also a part. With time, aluminium gets dissolved in water and the soil and as the rocks become soil after going through various processes like traction, solution etc, it gets aluminium ions also with it.

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Most of the charged particles from the sun are deflected around earth by the
oksian1 [2.3K]
<span>Most of the charged particles from the sun are deflected around earth by the Earth's magnetic field.

Inside the Earth lies molten core. High percentage of the core is iron. This iron rotates around the center and create magnetic field. This field extends out of the Earth into the space. It surrounds Earth and protects it from the charged particles. Those particles are diverted to the magnetic poles and they create lights in the atmosphere by reacting with gases in atmosphere. On the north magnetic pole we can see northern lights (aurora borealis) and on the south magnetic pole we can see south lights (aurora australis).</span>
7 0
3 years ago
The transformation (X,Y) ➔ (2X, 2Y) is applied to triangle DEF. That image is then rotated 900 counterclockwise. If the coordina
Norma-Jean [14]
The answer is c. (6, -4)


-3 times 2 is -6 and 2 times 2 is 4. So after the transformation we are left with (-6,4).
Since 900 is just 360 to times plus 180; rotating it basically means that it will end up in the same place and if we rotated it 180. These means we need to switch the signs on the numbers (positive to negative and vice-versa). Which gives us the answer of (6,-4).
8 0
2 years ago
Discuss the economic and political roles which South Africa or your own country plays at a regional, continental, and internatio
frutty [35]

South Africa has a republican government system, with a mixed market economy, composed of private liberty and a centrally planned economy.

<h3 /><h3>What is a planned economy?</h3>

It corresponds to the economic system where most companies belong to the state, which is responsible for decisions that influence business and the economy, unlike the market economy, which is determined by supply and demand.

Therefore, the centralized economy is an important factor in the country, where the state manages most of the wealth produced, with greater control over the economy.

Find out more about planned economy here:

brainly.com/question/14703586

#SPJ1

7 0
1 year ago
If Wegener showed you this evidence, would you have believed his theory? Explain?
fenix001 [56]

Answer:

No

Explanation:Because But geologists soundly denounced Wegener's theory of continental drift after he published the details in a 1915 book called "The Origin of Continents and Oceans." Part of the opposition was because Wegener didn't have a good model to explain how the continents moved apart

4 0
2 years ago
brooklyn and demetrius took a total of 115 photos at the science museum demetrius took 4 more photos than brooklinn how many did
koban [17]

Answer:

Demetrius took 61.5 ≈ 62 photos

Explanation:

total photos taken = 115

if both took an equal number of photos

then Brooklyn = 50% of 115

       Demetrius =  50% of 115

4 photos out of 115 will be = 4/115 * 100% = 0.0347 * 100 = 3.48 %

If Demetrius took 4 more photos then Demetrius will be taking = 50% + 3.48%

                                                                                                         = 53.48%              

If Brooklyn took 4 less photos then Brooklyn will be taking = 50% - 3.48%

                                                                                                  = 46.52%

therefore Demetrius took = 53.48 % of 115

                                           = 61.5 ≈ 62

6 0
2 years ago
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