OK well first off i would like to say that i have had a great time here in the marine biology class. Mr. Welton has really made it fun for me and i hope that he does this another year in the future so other kids can experience this class. Throughout the year we have been on field trips like going to Omaha which was one of the funnest fieldtrips i have ever been on, and also we went to Mr. Weltons brothers pet shop which was also really fun. We stopped at 7-eleven on the way there and i got a soda, hotdog, and a pack of beef jerky for breakfast! Wow was that deleicious. Anyway, over the many dayas of this class i have learned about all types of different creatures and cells likes things. I think that if Mr. Welton wasnt teaching this class then i would have had a horrible times because he is the best teacher in the Hyman Brand Hebrew Academy!
Wednesday, May 13, 2009
When i got this packet, I thought to myself this is huge and its going to suck, but I was reading it and i actually found a lot of things interesting. I found out that vertebrates enter our world approximatley 350 million years ago and this event changedlife on earth forever. Land vertebrates are the descendents of bony fishes and had to adapt to the harsh conditions ashore. If you live on land then that means you have to breath air and the descendants had lungs which allow absorption of oxygen directly from air. I also learned that there are around 7,000 living species of reptiles, including lizards, sankes, turtles, and crocodiles. Their dry skin is covered with scales to prevent water loss and to prevent them from drying out. This ferature also allows the animal to lay eggs on land. Like most fishes, reptiles are cold blooded and they get very sluggish in cold temperatures. This feature tends to keep them out of the cold regions especially on land because the air temperature is colder then the ocean temperature. Last but not least i would like to talk about sea turtles. They belong to an ancient group of reptiles. They have an armored shell that is attached to their backbone, therefore if you take it off they would die. Also unlike land turtles, they can not retract their head into their shell and their legs are bigger then land turtles because it helps them swim. Overall this packet was pretty interesting.
Friday, May 8, 2009
This week has probably been the hardest week for me in this class so far. We had to work on our super long powerpoint presentations that were on articles that we had to find on GoogleScholar. At first I tried to look for articles about jellyfish and then albino dolphins but all of those articles were super hard and way too confusing for me to understand. I even tried to have Shandra help me find an article and she found one about blue whales which was good but it was also extremly hard so i couldnt do that either. Finally on my second to last day of working i found an article! This article is about the population of dolphins starting to decrease in the pacific ocean due to bycatch. Bycatch is when an animal is caught unintentionally while trying to catch a different animal intentionally. This happens to dolphins while fisherman try to catch tunas swimming around them. When the fisherman catch the dolphins in the net they are seperated from there mother if they are a calf and wont know where to go once they are put back in the water. This causes the death of many dolphin calfs because they can not survive on their own as a baby. Overall, i was very glad i chose this topic because i became more and more interesting as i went through it.
Friday, May 1, 2009
This week in my Marine biology class we were assigned a new project from Mr. Welton. In this project we have to make a Powerpoint Presentation about an article that we read that has to do with Marin Biology. We are allowed to pick the Article that most appeals to us. So i started looking at Ocean Sunfish because they look very cool and are known as the biggest fish in the world. I knew this because i have done a project about them years ago. When i couldnt find any good looking articles about them i switched to looking for jellyfish and then eventually a weird fish called a blob fish. I still couldnt find a fish so i am still looking at the moment. I will keep you updated!