During Meiosis 1 in Prophase 1 crossing over occurs. The two chromosomes switch part of their genetic information. Also independent assortment occurs during meiosis which is the formation of random combinations of chromosomes in meiosis and of genes on different pairs of homologous chromosomes.
The ecosystem would be greatly effected, most likely causing the system to fail, and could lead to the death of a species, or a very large population boost, or even worse.
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The moons of Saturn are numerous and diverse, ranging from tiny moonlets only tens of meters across to enormous Titan, which is larger than the planet Mercury. Saturn has 82 moons with confirmed orbits that are not embedded in its rings of which only 13 have diameters greater than 50 kilometers as well as dense rings that contain millions of embedded moonlets and innumerable smaller ring particles.Seven Saturnian moons are large enough to have collapsed into a relaxed, ellipsoidal shape, though only one or two of those, Titan and possibly Rhea, are currently in hydrostatic equilibrium. Particularly notable among Saturn's moons are Titan, the second-largest moon in the Solar System (after Jupiter's Ganymede), with a nitrogen-rich Earth-like atmosphere and a landscape featuring dry river networks and hydrocarbon lakes Enceladus, which emits jets of gas and dust from its south-polar region,and Iapetus, with its contrasting black and white hemispheres.
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There is overall agreement that volcanic sulphate aerosols in the stratosphere can reduce solar radiation reaching the earth's surface for years, thereby reducing surface temperatures, affecting global circulation patterns and generally the global climate system.
The answer is the first one
