It is determined by by subtracting birth rate from death rate
Solar radiation is radiation heat transfer into the biosphere and trapped by the plant to the form of chemical energy. The motion of air and gas in biosphere due to contact with cold or hot surface involve conduction and radiation. The wind <span>carrying heat is convection.</span>
A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.
ANSWER:
Rivers are very important for a country's economy as many trades take place through rivers .
Also many new ideas and comodities spread across the eorld through sea routes .
Also ideas of new technologies,achievements in medical science get across the world through rivers and seas.
Even sometimes some special things that need to taken from one country to another with high security are taken through rivers.
There can be many more reasons for rivers being important for a country's economy.
HOPE IT HELPS!!!!
PLEASE MARK BRAINLIEST!!!!!
Extrusive volcanic rocks are formed on the surface of the earth and cool relatively quickly from lava erupted from a volcano. The rapid cooling of lava on the surface does not allow for visible crystals to form. The crystals are minute and most can only be seen under a microscope. Basalt is an example of an extrusive igneous rock.
Intrusive igneous rocks are formed when magma cools within the crust. This magma cools slowly and so crystals develop in these rocks. Granite is an intrusive igneous rock.
