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.
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