Answer:
Explanation:
An old river occurs at the plain course and it is at its lower stage.
Here:
Answer: Option (a) is the correct answer.
Explanation:
In order to maintain a neutral charge the number of protons must be equal to the number of electrons.
For example, in a neutral carbon atom the atomic number or number of protons is 6. Also, number of electrons present in carbon atom will be 6.
Thus, we can conclude that out of the given options for elements to maintain a neutral charge number of electrons and protons must be equal.
Igneous rocks that cools very quickly when it forms may have a texture that is smooth and shiny with no visible grains.
Igneous rocks also called as magmatic rocks is one of the three main rock type present the other two being sedimentary and metamorphic rocks.These rocks are formed by cooling and solidification of magma or lava .
The magma is derived from from partial melts of rocks which are existing in the earth's crust or mantle.Melting is caused by one of the three processes increase in temperature, change in composition or decrease in pressure.
Igneous rocks are classified based according o their occurrence, texture, chemical composition or mineral content.According to their mode of occurrence they are classified as intrusive or extrusive igneous rocks.
Learn more about igneous rocks,here:
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