BIO 200 Lecture Notes - Lecture 2: Hadean, Eaves, T Formation

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The formation of earth and our solar system. Ea(cid:396)th is a (cid:448)e(cid:396)(cid:455) d(cid:455)(cid:374)a(cid:373)i(cid:272) e(cid:374)tit(cid:455) that has (cid:272)ha(cid:374)ged d(cid:396)asti(cid:272)all(cid:455) si(cid:374)(cid:272)e it"s o(cid:396)igi(cid:374) The evolution of life changed the physical nature of earth. The physical changes changed the evolution of life. Large, rotating cloud of dust, rocks, and gas. This disk was composed of hydrogen, helium, and other heavy elements that were ejected by the supernovas. A star close to the protoplantary disk was destroyed in the supernova and sent shockwaves through the disk. As the cloud from the shockwave accelerated, most of the mass in the disk concentrated in the middle and began to heat up. Enormous amounts of heat at the center of the pre solar system led to the nuclear fusion of hydrogen and helium, which led to the formation of our sun. Small perturbations that were close by, collisions of matter, and other things remained in the disk, which allowed for the formation of protoplanets- baby developing planets.

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