research project

                                                         CROC VS ALLIGATOR

Reptiles. One obvious similarity between alligators and crocodiles is that both animals are reptiles. They are cold-blooded creatures that expend little energy when they move. They cannot regulate their own internal body temperature, and must rely on external heat sources such as the sun. The most obvious way to discern the two reptiles is to stare down their sinister snouts. Alligators have U-shaped faces that are wide and short, while crocodiles have slender almost V-shaped muzzles.

PENCILS

The core of a pencil is made of graphite, clay, and water. During the 17th century, the graphite and clay were grounded down by hand, put into a cylindrical mold, and fired in a kiln. Today, pencils are mass-produced by machines that cut down the wood, insert the lead, and stamp or print a design. companies: Bic Pencils, Blackwing Pencils, Calepino Pencils.

HEART TO HEART

The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.

EYES

Your eye works in a similar way to a camera. When you look at an object, light reflected from the object enters the eyes through the pupil and is focused through the optical components within the eye. The front of the eye is made of the cornea, iris, pupil and lens, and focuses the image onto the retina.