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The earth is characterised by a sphere

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What stage of meiosis characterised by crossing over?

prophase I


Is GeH2 an Interstitial hydride?

No. GeH2 is a methylene analog and is not well characterised. It has been stabilised in complexes and this idicates that it is a covaent molecule. The best characterised hydride of Germanium is GeH4 germane, and related GenH2n+2 alkane analogs , where n=2 - 5. these ar all covalent molecules.


Astrological event characterised by a celestial body hiding a smaller one when travelling in front of it?

This astronomical event is called a transit. It occurs when a smaller celestial body, such as a planet, passes in front of a larger one, like a star, as observed from a different vantage point, such as Earth. Transits are interesting phenomena that provide valuable information for astronomical research and can also be observed from Earth.


Does the savanna have sand?

Savannas are a grassland system characterised by widely spaced trees. It may be considered a transitional zone between forest and desert


What is the difference between a meteoroid and an asteroid?

Asteroid: elatively small, inactive body, composed of rock, carbon or metal, which is orbiting the Sun. Comet: A relatively small, sometimes active object, which is composed of dirt and ices. Comets are characterised by dust and gas tails when in proximity to the Sun. Far from the Sun it is difficult to distinguish an asteroid from a comet. Meteoroid: A small particle from an asteroid or comet orbiting he Sun. Meteor:A meteoroid that is observed as it burns up in the Earth's atmosphere - a shooting star. Meteorite: A meteoroid that survives its passage through the Earth's atmosphere and impacts the Earth's surface.A meteoroid is a meteor that hits earth and is recorded, a meteor just keeps orbiting, and orbiting the sun