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Microbes at the Gas Pump
Watering the Air
A Tongue and a Half
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Little Beetle, Big Horns
The Science Fair Circuit
Double take
Face values
A Meal Plan for Birds
Chemistry and Materials
Nanomagnets Corral Oil
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The Incredible Shrunken Kids
Computers with Attitude
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Dinosaur Eggs-citement
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Explorer of the Extreme Deep
Deep History
Quick Quake Alerts
Eating Up Foul Sewage Smells
Indoor ozone stopper
Forests as a Tsunami Shield
Finding the Past
Digging Up Stone Age Art
Decoding a Beverage Jar
Sahara Cemetery
Saltwater Fish
Tiger Sharks
Food and Nutrition
Recipe for Health
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Building a Food Pyramid
GSAT English Rules
Adjectives and Adverbs
Who vs. Whom
GSAT Exam Preparation Jamaica
2014 GSAT Results for Jamaican Kids
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Human Body
A Long Trek to Asia
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The Surprising Meaning and Benefits of Nursery Rhymes
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Extra Strings for New Sounds
The Particle Zoo
Invisibility Ring
Getting the dirt on carbon
White fuzzy mold not as friendly as it looks
The algae invasion
Sea Turtles
Box Turtles
Komodo Dragons
Space and Astronomy
Sounds of Titan
Big Galaxy Swallows Little Galaxy
Planets on the Edge
Technology and Engineering
Slip Sliming Away
Weaving with Light
Musclebots Take Some Steps
The Parts of Speech
What is a Noun
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Robots on the Road, Again
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Dogfish sharks are characterized by smooth dorsal fin spines, teeth in upper and lower jaws similar in size. The spiny dogfish or piked dogfish is a type of small shark and one of the best known of the dogfish. Just the Facts: The spiny dogfish has dorsal spines, no anal fin, and white spots along its back. They can grow up to 107 cm and are greyish brown in color. Males are identified by their "claspers," while females have none. Something's Fishy: The spiny dogfish shark is found in shallow waters and offshore in most parts of the world, especially in temperate waters. It feeds on small fish and invertebrates, and can be present in such great numbers that it can seriously impact commercial fisheries. It is also a common prey item for large fish, other sharks, and marine mammals. Birds and Bees: Reproduction is ovoviviparous, meaning that they produce eggs that develop inside the mother's body and hatch immediately after their release from the parent. Litters can range in size between 6 and 15 young fish. Food for Thought: Spiny dogfish are fished for food in Europe, the United States, Canada, New Zealand and Chile. The meat is primarily consumed in England, France, the Benelux countries and Germany. The fins and tails are processed into fin needles and are used in less expensive versions of shark fin soup in Chinese cuisine. In England it is sold in "fish and chip shops" as "rock salmon", in France it is sold as "small salmon" (saumonette) and in Belgium it is sold as "sea eel" (zeepaling). It is also used as fertilizer, liver oil, and pet food, and, because of its availability and manageable size, as a popular vertebrate dissection specimen, especially in high schools.


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