Description
Classmate 1:
This week I would like to talk about biological evolution itself. This natural phenomenon occurs when only it is needed for survival of the species or in the case where the species is forced to live a certain way. This phenomenon happens with almost all types of species that ever existed. The world is ever changing, therefore the living organisms that inhabit it must change with it as well. A perfect example of this are the gills of a fish. Gills for fish are used for breathing underwater because some fish may need to survive under areas with low traces of oxygen particles. Another example of this natural phenomenon includes frogs and caterpillars. The first creatures we learn about in elementary school when it comes to biological evolution. The frog first starts out as a baby tadpole then forms into a small creature with little legs and soon develops into a full grown frog or toad. The caterpillar starts off as a worm like creature the hibernates in a cocoon for a long time and then outcomes this beautiful butterfly whenever it is done growing. These are just mere examples of something that mostly occurs in all living species. Another reason why this ma occur is because the environment around the organism may cause it to evolve in order to thrive in it’s own habitat. An example of this the small evolution or adaptations in bears. Bears have a lowered metabolism because they have to survive long winters while rationing the food they have stored up for themselves and their family.
Classmate 2:
Good Evening Class,
I hope all is well during this time of chaos. I really found the evolution of the human body very intriguing. Everyday we use our organs which are hundreds of millions of years old, but we know nothing of their history. Nowadays, new scientific imaging technology offers us a sudden new view of our anatomy. A unique occasion to explore our body, to retrace its history, and understand what relates us to other species. We are truly a time machine. Each of our body’s organs appeared and evolved on a timeline that science can now reestablish. We had genitalia before we had ears, and eyes before we had limbs. The genealogy of our organs shows that we share a long history with the other inhabitants of our planet. Our evolution of our organs takes us back to a distant aquatic past. It was in the water that the organs were born, which today allow us to see, touch, and reproduce.
Ward, C. (2003). The Evolution of Human Origins. American Anthropologist, 105(1), 77-88. Retrieved March 20, 2020, from www.jstor.org/stable/3567315
Bodies. (2018, September 14). Retrieved from http://humanorigins.si.edu/human-characteristics/bodies
https://www.mentalfloss.com/article/55869/6-traits-humans-inherited-fish
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