Blog 5: There have been 5 major extinction events throughout history, are humans impacting the 6th? Why or why not?

Yes, I strongly believe humans are impacting a 6th extinction. We are a very industrial world with cars, factories, trash, and other posionous additions to the world. Pollution is a major factor in why our world is such an ugly place, in my opinion. We share this world not just with eachother, but with other living organisms. If we trash and pollute this earth we are not just hurting the enviroment we live in, but the animals that share it with us. Cutting down trees destroys the home of many living creatures, global warming cause by our pollution is slowly taking away the home of the majestic polar bears, and the waste that is disspossed of in our public streets is affecting the ocean and the beautiful life that calls the water home.

Blog 4: Describe the three types of selection: directional, stabilizing and disruptive and give an example of each in your own words.

Directional Selection is based on the physical appearnance in which one chooses another for mating. Directional Selections occurs mainly when there is an enviromental change and when populations migrate to new areas. For example, the speed trait of a greyhound dog is favored more than any other physical trait.

Stablilizing Selection is the oppisite compared to directional selection. There are no traits that are looked for in a mate, in this case traits will vary throughout an organism. For example, human babies that are too small are prone to disease or might be too weak. But babies that are too large can endanger themselves and their mothers when giving birth.

Disruptive Selection is when there are two major traits that are favored while there is one that is in between and prone to greater danger. For example, rabbits with white fur that live in an enviroment of white rocks will be able to hide from predadtors and rabbits with black fur in an enviroment of black rocks will be able to hide from predators as well. However, the grey rabbits that live amongst these black and white rabbits will have no deffense from predadtors and will be in higher risk of being hunted.