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Arisa [49]
2 years ago
4

How many 100-km-diameter rocky (3000 kg/m3) planetesimals would have been needed to form earth?

Geography
1 answer:
inna [77]2 years ago
8 0
Mass of the Earth:m ( E ) = 5.972 * 10^27 kgThe rocky planetsimal:V = 4/3 * ( 100,000 m )³ π = 4/3 * 10^15 * 3.14 = 4.1867 *10^15 m³m ( Planetsimal ) = 4.1867 * 10^15 m³ * 3 * 10³ kg/m³ m ( Planetsimal ) = 1.256 * 10^19 kgFinally:5.975 * 10^27 kg  :  1.256 * 10^19 kg = 4.7548 * 10^8 Answer : 4.7548 * 10^8 or 475,480,000 planetsimals

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Life on earth follows climate regimes, biomes develop characters in relation to climate of the region.

Explanation:

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What are the characteristics of the Congo River Basin ecosystem? Write a paragraph of at least 5 sentences, and be sure to give
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Rainforest of the Congo Basin share many characteristics with the Amazon rainforest and other tropical forests worldwide: high diversity, dense vegetation, and multiple layers of forest structure. The forest canopy is usually about 30 meters tall, with emergent trees such as the great maobi reaching up to 50-60 meters. The most humid, western portions of the Congo basin forests remain evergreen throughout the year, while interior forests are semi-deciduous, and many species drop leaves for short periods of time. Peripheral forests of the Congo basin with less precipitation become even more deciduous, although trees usually grow foliage on some branches before other branches lose their leaves.

Forests of the Congo Basin are characterized by fewer species of trees than the Amazon rainforest. In the interior of the Congo, forests are dominated by heavy seeded, shade tolerant trees of the Caesalpinoid subfamily of the legume family, such as Julbernardia and Cynometra species. Other areas of mature forest include the monodominant stands of Gilbertiodendron dewevrei, also a member of the legume family. Heavy seeded and shade tolerant trees such as these often have greater success seeding and surviving in the shade of the mature forest. In open, more disturbed habitats of secondary forest however, sun loving, light seeded trees dominate, such as Entandrophragma and Khaya species, both members of the African mahogany group, as well as species of Albizia. In younger secondary forests, early pioneers such as Musanga cecropiodes are more common.

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<h2>Hope this helps have a nice day ❤️</h2>

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