The Adventures of Archibald Higgins - Computer Magic by Jean-Pierre Petit

By Jean-Pierre Petit

The curious Archibald Higgins falls right into a computing device after keying a forbidden note and learns how a working laptop or computer works "from the inside."

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Herds of these peaceful vegetarians lived along the western shores of the great inland sea that covered North America during Late Cretaceous times. 28 PANOPLOSAURUS Panoplosaurus FACT BOX PAN-oh-pluh-SORE-us Length: Weight: Time: Where Found: Classification: Notable Notes: 23 feet 4 tons 75 - 65 million years ago Alberta, Canada; Montana, Texas An ankylosaur or armored bird-hip. The shape of the skull indicates that this dinosaur had large cheek pouches for food storage. million years ago 248 208 Triassic Jurassic 144 65 Cretaceous Panoplosaurus means "armored lizard" after the bony plates that covered its back and head.

5 The layers of mud turn into stone below the earth's surface. Over millions of years, shifts in the earth's crust then raise up the layers. Next, erosion wears away some of the layers, exposing the fossil skeleton. 36 How to dig up a dinosaur. Most often, fossil dinosaur skeletons are found still buried with only some of the bones showing at a road cut or the side of a cliff. Once discovered, teams of experts use heavy equipment and special tools to uncover the bones and get them back to the laboratory.

3 Mud dumped by the river covers the bones. Oxygen is shut out so that no further decay occurs. 4 Layers of mud pile up above the bones. Minerals brought in by water seep into the bones and harden them. 5 The layers of mud turn into stone below the earth's surface. Over millions of years, shifts in the earth's crust then raise up the layers. Next, erosion wears away some of the layers, exposing the fossil skeleton. 36 How to dig up a dinosaur. Most often, fossil dinosaur skeletons are found still buried with only some of the bones showing at a road cut or the side of a cliff.

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