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Density is one of the most factors that play a key role in plate tectonic activities. Some of the ways in which density is important in the field of plate tectonics are as follows-
- The convergent plate boundaries are responsible for the creation of a subduction zone, where the high-density lithospheric plate subducts below the less dense one. It is because the heavier plate is comprised of heavy minerals thereby forming heavier rocks as a result of which its density increases. Due to these differences in density, there occurs a subduction zone.
- The divergent plate boundary forms where two plates move away from one another. This type of plate motion is responsible for the eruption of magma on the seafloor. As the plates diverge, the lithosphere becomes eventually thin, and with more progressive spreading, the magma comes out to the seafloor. This is because the hot magma is less dense, and forms convection cells as they rise upward. This is how the density helps in the upwelling of magma at the mid-oceanic ridge in a divergent plate boundary.
- When there collide two plates of equal densities, then it gives rise to the formation of huge mountains, because neither of them is heavy to get sink. So it uplifts the crust, forming a sandwich-type pattern.
The official national animal of Australia is the Kangaroo.
The Kangaroo which is hunted for meat and for sport, and used as a motif in the decorative arts, the kangaroo was finally recognized as an official symbol of Australia when it was included on the nations coat of arms in 1908.
The answer is: Kangaroo
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top answer i think
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if u cant umderstand me use google translate
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In 2019, Australia exported a total of $284B, making it the number 19 exporter in the world. ... The most recent exports are led by Iron Ore $67.5B, Coal Briquettes $51.5B, Petroleum Gas $34.1B, Gold $25.4B, and Aluminium Oxide $5.6B
Oil, turf, gas, and wood are popular.
