The percentages of Russians in these countries at the beginning of the twenty-first century had changed to: 25.6 percent<span> of the total population in Estonia, 28.8% in Latvia, and 6.4% in Lithuania (Heleniak). I hope the answer will help you</span>
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.
Answer:
Geologists can use index fossils to match rock layers in different areas.
Explanation:
Answer:
Magmas are mainly liquid and contain dissolved fluids such as water, most are less dense than the adjacent solid rock and so move upward.
Explanation:
Magma -
It is a semi solid particle and the igneous rocks are formed from magma .
Magma is basically found inside the surface of the Earth and may come out from Volcanoes , due to any tectonic movements .
The composition of magma is basically molten form of rock along with gas bubbles and some crystals .
The magma is very dense in nature and slightly viscous and hence can flow , being semi - solid in nature .
Answer:
Arctic Circle
Explanation:
The arctic circle 66.56083N of the equator. It is one of the two polar circles and the most northerly of the five major circles of latitude. Eight countries can be found withing the arctic circle; Norway, Russia, Finland, United States(Alaska), Canada (Yukon, Northwest Territories, and Nunavut), Denmark (Greenland), and Iceland (where it passes through the small offshore island of Grímsey).