how was it formed?
A solar nebula partitions a volume out of a molecular cloud by gravitational collapse, which begins to spin and flatten into a circumstellar disk, and then the planets grow out of that disk with the Sun
Earth
In theory, a solar nebula partitions a volume out of a molecular cloud by gravitational collapse, which begins to spin and flatten into a circumstellar disk, and then the planets grow out of that disk with the Sun
what happens when a keystone species is removed from an ecosystem apex The ecosystem would be dramatically different or cease to exist altogether. can you explain the meaning of this category? A keystone species is a species which has a disproportionately large effect on its natural environment relative to its abundance what animals fall under this category? wolf who introduced this system? Robert T. Paine what is the meaning of the environment mentioned above? It encompasses all living and non-living things occurring naturally. where is this environment applicable? Earth or some parts of Earth what is this place? Earth is the third planet from the Sun and the only astronomical object known to harbor life.
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Earth [SEP] Formation
The oldest material found in the Solar System is dated to Ga (billion years) ago. By the primordial Earth had formed. The bodies in the Solar System formed and evolved with the Sun. In theory, a solar nebula partitions a volume out of a molecular cloud by gravitational collapse, which begins to spin and flatten into a circumstellar disk, and then the planets grow out of that disk with the Sun. A nebula contains gas, ice grains, and dust (including primordial nuclides). According to nebular theory, planetesimals formed by accretion, with the primordial Earth taking 10– (Mys) to form. A subject of research is the formation of the Moon, some 4.53 Ga.