Blog # 6 Food Pyramid

 Of all the food groups, fruit, veggies, grains, dairy, and junks i think the most inportant would be the grains group.Not only because it is the bigest in the food pyramid but because it is estencial for humans to go through their daily lives. The other foods in the pyramid are also inportant and must be consumed also in order for the body to keep its normal growth and energy rate. I think the most important thing for humans besides water is energy. Without energy the human body wouldn't be able to go around doing all the necessities for the day. What a human's body needs is carbohydrates and in grains like bread, pasta, ceral, and rice are stocked full of the carbohydrates humans need. Another thing the human body needs is nutrients and protien that the grains also has. However grains doesnt have that many protiens as in dairy and fruits. So even though i think the most important group in the food pyramid is grains it is better if humans eat everything of the food pyramid except of course the junks group that are full of fats and oils. Still even the human body needs the junks to build other things needed for a human to go on throughout the day. It is always good to have a little of everything in your diet but too much of one thing is never good for your body so even though grains are good for you and even if junks taste good you shouldn't eat too much of it.
http://www.mypyramid.gov/
http://www.hsph.harvard.edu/nutritionsource/what-should-you-eat/pyramid/
http://en.wikipedia.org/wiki/Food_guide_pyramid

Blog #5 Causes of Extinction

The five major extinction events in history was the mass extinction that took place at the end of the Ordovician where 60% of both terrestrial and marine life worldwide became extinct. In the late Devonian period enviorments that had nurtured reefs for a long time turned bad and the world once again fell in to a second mass extinction. The Permian mass extinction showed about 80-95% of marine species went extinct and the reefs didnt appear for millions of years. In the Triassic mass extinction about half of the marine invertbrates went extinct and 80% of land quadrupeds went extinct. Futhermore, in the end of the Cretaceous mass extinction 65 million years ago caused the widely know extinction of dinosaurs. Not only that almost on large land animals survived and plants where also affected. Now it seems humans are causing the 6 great mass extinction. It is because of the growing population of humans that are pushing some species into enviorments they aren't adapted to causing them to be hunted and eventually becoming extinct. Besides that the main cause is the changing climate which is caused my humans waste products and green house gases or known as global warming. With global warming the ice caps are melting which will eventually cause the sea level to rise like in the 5 mass extinction when sea level rised and many land animals went extinct.

 http://www.skepticalscience.com/Earths-five-mass-extinction-events.html

http://news.yahoo.com/s/livescience/20110303/sc_livescience/humansonvergeofcausing6thgreatmassextinction