BIO 1300 Lecture Notes - Lecture 3: Homo Rudolfensis, Homo Ergaster, Homo Erectus
19 Feb 2016
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Document Summary
The human animal the increased levels of oxygen in the environment organelles) First billion years was just bacteria and primordial seeds. Photosynthesis: co2 + h2o cho + o2 using sunlight. Reduce concentration of co2 in the environment, process has lead to. 3 billion years ago, eukaryotes developed (single celled, with. Paleozoic area is the era of the animals. Colonization of land by plants, somewhere in the middle of paleozoic. Pangea, lead to shift in climate in terrestrisl environment, hot dry. Only organisms that could survive are reptiles. After the asteroid hit, the only organisms that survived were the. Humans have come about in the past 2mya. Kingdom phylum class order family genus species hibernating mammals environment. Lowest end of thr hierarchy into contact with each other compatibility are not fertile lineage, has to do with the number of chromosomes. There are barriers to interbreeding: geographic, they do not come. Sexual fertility occurs at differnet times; genetic in terms of.
