Monday 23 June 2008

Evolution



It is a good website of evolution. It is about evolution is occur when the different genes become common. The heritable traits are helpful for the organisms. In along time, the species can produce one another. Gradual,
it divergence.


This website is about the evolution is a inheritable genes itbecome common.The changes must be passed in next generation. The top left the human evolution picture. I learned human is the chimps evolutional and becomes human.

Saturday 14 June 2008

Fossils


I found this website about the fossil, and the picture is small ammonite fossil. I learn the fossils are in the Archaean to Holocene Epoch. A fossil is a died organism, and it just has one part as usual. Some fossils they don't really have the body, like the footprint or feces. We call they trace fossils.






http://www.amonline.net.au/palaeontology/faqs/fossil.htm#bones
The picture is a fish fossil, it seem cool! I find the other website about fossil. I learned if you have a bones, it may not a fossil. If it is a fossil, it will be heavy. Also, you can look up the calcium carbonate. You need to look around the water in there. The water most rich calcium carbonate it. It means the bones is more past than recent. It is the mark of fossils.

Friday 6 June 2008

The Universe

http://www.scientificpsychic.com/etc/timeline/timeline.html

I found this website of the timeline of the Earth. At the 3500 mya the life start. The first life in Earth is blue-green algae. When the 235 mya the first dinosaur appear and lizards, too.The time pass, at the Cretaceous Period the Tyrannosaurus is the king in the Earth. However, at the 65 mya the 170km stone hits the Earth. All most all the dinosaurs disappeared. The first ancestor of human appear in Tertiary Period.

My ideas:I believe the Cretaceous Period end in the big stone hits the Earth because the only things can make dinosaurs died is it. I think this website needs to talk about when the cockroach appear,I'm interest of it.


This website is about the beginning of the universe. The writer said the universe begins to grow.When the time pass, it will be smaller and smaller.It mark the beginning of the universe is the big bang. I believe this theory because I think the universe has some energy to grow. When it don't have that energy, it becomes smaller.I've read a book, it is about the unverse is appear by some element hit each other.The elements start to grow big and that is our universe.It is the cause I believe this theory.