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Seeds of the Future
Tree Frogs
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Sleepless at Sea
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A Light Delay
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Baby Number Whizzes
Carnivorous Birds
Chemistry and Materials
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Flytrap Machine
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Small but WISE
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Little Bits of Trouble
Spotty Survival
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Finding the Past
Salt and Early Civilization
Settling the Americas
Stone Age Sole Survivors
Nurse Sharks
Food and Nutrition
Healing Honey
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Losing with Heads or Tails
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Human Body
Flu Patrol
Gut Microbes and Weight
Walking to Exercise the Brain
Giant Squid
Golden Retrievers
Lhasa Apsos
Killer Whales
What Not to Say to Emerging Readers
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The Surprising Meaning and Benefits of Nursery Rhymes
Einstein's Skateboard
IceCube Science
Gaining a Swift Lift
Tracking the Sun Improves Plant Pollen
Fungus Hunt
Stalking Plants by Scent
Garter Snakes
Space and Astronomy
A Dead Star's Dusty Ring
A Smashing Display
Sounds of Titan
Technology and Engineering
Model Plane Flies the Atlantic
Supersuits for Superheroes
Beyond Bar Codes
The Parts of Speech
Countable and Uncountable Nouns
Adjectives and Adverbs
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How to Fly Like a Bat
Ready, unplug, drive
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Lice (singular: louse) (order: Phthiraptera) are an order of over 3,000 species of wingless parasitic insects. They are obligate ectoparasites of every mammalian and avian order, with the notable exception of Monotremata (the duck-billed platypus and the echidna or spiny anteater) and Chiroptera (bats). A New Hairdo: A louse egg is commonly called a nit. Lice attach their eggs to their host's hair with specialized saliva which results in a bond that is very difficult to separate without specialized products. A nit comb is a comb with very fine close teeth that is used to scrape nits off the hair. Lice Specialization: Lice are highly specialized based on the host species and many species specifically only feed on certain areas of their host's body. As lice spend their whole life on the host they have developed adaptations which enable them to maintain a close contact with the host. These adaptations are reflected in their size (0.5 mm to 8 mm), stout legs, and claws which are adapted to cling tightly to hair, fur and feathers, wingless and dorsoventrally flattened. Lice feed on skin (epidermal) debris, feather parts, sebaceous secretions and blood. A louse's color varies from pale beige to dark gray; however, if feeding on blood, it may become considerably darker.


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