In Science class, we had dissected a frog...and it was gross, very gross. I made my partner do the dissecting while I did the intellectual things, such as pointing to a picture to show him what it looked like and where it was, and writing a list of organs to take out. I did help, I just didn't touch the frog....which John had a little too much with.

The worst thing about the frog dissection was the smell. It made my eyes water and if I breathed through my mouth for a breath (My allergies were acting up) I could basically taste this really nasty taste that I couldn't just get rid of with water. It sucked...majorly...
Have you ever head someone say that an amphibian has a double life? Ever wonder what it means? It means that the amphibians lives at least part of its life in water, and part of it on land.

You know that frogs come from tadpoles, right? That's the time it spends in water. They hatch from eggs in the water and grow into larvae with gills. As tadpoles, an amphibian can be an herbivore, meaning they only eat plants, or algae in this case. They only have one circulatory system for blood as well.

As juveniles, they begin to grow lungs and limbs. They develop a new digestive system, so they can eat protein, like bugs. Their circulatory systems also change. They grow a second loop for their blood, and a better heart.

Once they're adults, they spend their life on land, either hopping or crawling around on the ground. They now have legs, and arms. Also, they have lungs, now, so they can breath. Not only that, but they can blink, just like us!

So if you've wondered what it meant, now ya know!
Ever wonder how you can see images? Or how your eyes work on the inside? Well, let me tell you. It starts at the cornea and ends at the brain. But let's take a deeper look at this, shall we?

Light enters the eye by first passing through our cornea, a protective layer over our eyes. Then, it will pass by the iris and enter the pupil. Through the pupil, it goes through a lens.

Now a lens refracts light, and we think of glass lens on cameras or glasses on first thought, huh? We have lens in our eyes, light does the same thing here, though, it refracts. It then reflects off of the retina and to the optic nerve. From there, it enters the brain to be processed.

And that's how light travels through your eye to help you see.
The greatest scientific discovery would have to be medicine and antibacterial soap. Medicine helps us survive a sickness and antibacterial soap helps prevent us from getting sick. Other's would think it was cars or gasoline, but I believe that we could live with out those things and still survive as long as we could now.

I believe that medicine helps us live longer because it helps us survive. Antibacterial soap is a sanitary measure that helps us to not become sick. Medicine also prevents us from getting sick, or sicker.
Why are there warm plant fossils from a tropical climate being found in Antarctica? Continental Drift can help explain why. Continental Drift states that the continents and the plates their on drift on top of the mantle, a layer of molten rock under the Earth's surface. Pangaea was a super-continent of all the continent today put together. It split apart to form our current continents that will, in millions of years, have moved again. This also helps the theory of the plants being found in Antarctica.

To state this theory, Antarctica had must have been warm at some point, right? Scientists believe that Antarctica was actually in a warmer climate until Pangaea broke apart. Since the continents moved, climates changed as well. Antarctica floated to a colder area and, with the icy cold water surrounding it, slowly grew to be an icy place.
Say you had an old bone and wanted to date it. What would you do? How would you do it? You would probably want to use the Carbon-14 method of dating things.

You would analyze the Carbon-14 material in the rock and take a percentage of it compared to the Nitrogen-14 material. The more parent material there is, the younger it is. The more daughter material there is, the older it is.
     Natural Selection is a theory developed by Charles Darwin and Alfred Wallace. Darwin, however, usually receives the most credit. Darwin developed the idea by taking notes on finches he saw on his voyage on the HMS Beagle. He noted that finches on the Galapagos Islands were similar, but different and that their beaks helped them survive with how they acted.
     Charles Darwin also wrote On the Origin of Species, a book stating his theory with evidence of it. He suggested that species evolved over time with small genetic variations that helped them to survive. Over millions of years, today's species evolve into what we know today.
     Ancient fossils can be bones, imprints, shells and other things. They each tell us something different, but how did scientists create Earth's history over billions of years? The plant imprints in rocks helped them immensely. These imprints helped showed how Earth grew. These imprints showed what environment the Earth had millions of years ago.
     The Grand Canyon's walls have millions of years of geological history in them. The "stripes" are actually rock layers that happen over time, stacking on top of each other, younger over older. For example, if you take a picture a day and just lay it down and slowly stack it up, the older ones will be toward the bottom of the stack, not toward the top. This is called superposition.
     The Grand Canyon also has places in the walls where layers of rock seemed to have grown upward instead of to the side. This shows a cross-cutting relationship. The rock cutting through the other layers has to be younger than the other layers because you can't cut something that's not there. It's like trying to cut a pizza that's not there, although some people could argue that imagination is key.
      The idea of evolution presents that all species evolved and adapted to their environments over time. Charles Darwin is the person who created this thought in the first place. Overpopulation and limited resources presents the idea that species evolved themselves to be able to mate successfully and gather food successfully.
     This can lead to evolution by getting certain traits that help the species survive, such as the cheetah's "Cleopatra eyeliner". The "eyeliner" is actually a fur pattern that helps keep the sun out of their eyes. Bears go into hibernation so that they can sleep throughout winter and still be alive.