Answer:
Convection currents drive the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle. In places where convection currents rise up towards the crust's surface, tectonic plates move away from each other in a process known as seafloor spreading.
Explanation:
What i really think is that when only Russia Russia did not exist, then i am sure that no one would even know the history from there. so the answer to this would be that when Russia was existing, then only that is when the date roots come from. i hope that this helps you. have a great day! =)
The Atmosphere is 78% Nitrogen, 21% Oxygen and 15 Other gases.
Answer:
So reservoir will take 455000 sec to raise 35 cm
Explanation:
We have given surface area of the reservoir = 650000
Rate of flow = 0.5 m/sec
Height through which reservoir is raise = 35 cm = 0.35 m
So volume
We have to calculate the time
Time is given by
Answer:
Option (D)
Explanation:
The sedimentary rocks are the rocks that are suitable for the trapping of oil and natural gases. These are found to be present in the pore spaces of the rocks below the surface of the earth that are formed at different pressure and temperature conditions. The natural gases that are present in the interconnected pore spaces are methane, ethane, propane, and butane and they are basically found in association with the natural gases that collectively form the oil.
Some examples of sedimentary rocks that comprise these gas and oil are sandstone, limestone, and shale. These rocks are a type of reservoir that stores these fossilized products.
Thus, the sedimentary bedrocks contains these oil and gas deposits.
Hence, the correct answer is option (D).