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Where Have All the Bees Gone?
Seeds of the Future
Silk’s superpowers
Amphibians
Frogs and Toads
Salamanders and Newts
Newts
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Mouse Songs
Killer Flatworms Hunt with Poison
Behavior
Pipefish power from mom
Pain Expectations
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Birds
Crows
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Chemistry and Materials
The solar system's biggest junkyard
Fog Buster
Getting the dirt on carbon
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Graphene's superstrength
Fingerprint Evidence
Games with a Purpose
Dinosaurs and Fossils
Dino Bite Leaves a Tooth
Meet the new dinos
Message in a dinosaur's teeth
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E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
Giving Sharks Safe Homes
Arctic Algae Show Climate Change
Undersea Vent System Active for Ages
Environment
Food Web Woes
Toxic Cleanups Get a Microbe Boost
Sounds and Silence
Finding the Past
Preserving Ancient Warrior Paint
Traces of Ancient Campfires
Little People Cause Big Surprise
Fish
Skates and Rays
Carp
Seahorses
Food and Nutrition
Strong Bones for Life
Making good, brown fat
Packing Fat
GSAT English Rules
Who vs. That vs. Which
Finding Subjects and Verbs
Subject and Verb Agreement
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Detecting True Art
A Sweet Advance in Candy Packing
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Human Body
Taking the sting out of scorpion venom
Heavy Sleep
Opening a Channel for Tasting Salt
Invertebrates
Mosquitos
Moths
Scorpions
Mammals
Polar Bear
Wolves
Whales
Parents
Children and Media
The Surprising Meaning and Benefits of Nursery Rhymes
How children learn
Physics
Extra Strings for New Sounds
Speedy stars
Project Music
Plants
City Trees Beat Country Trees
Flower family knows its roots
Tracking the Sun Improves Plant Pollen
Reptiles
Pythons
Asp
Snapping Turtles
Space and Astronomy
Roving the Red Planet
Ringing Saturn
Supernovas Shed Light on Dark Energy
Technology and Engineering
A Satellite of Your Own
Switchable Lenses Improve Vision
Slip Sliming Away
The Parts of Speech
Countable and Uncountable Nouns
Adjectives and Adverbs
Problems with Prepositions
Transportation
Reach for the Sky
Tinkering With the Basic Bike
Revving Up Green Machines
Weather
The solar system's biggest junkyard
Recipe for a Hurricane
Watering the Air
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Fleas

Flea is the common name for any of the small wingless insects of the order Siphonaptera. Fleas are external parasites, living off the blood of mammals and birds. Itch causing critters: In most cases, fleas are just a nuisance to their hosts, but some people and some animals suffer allergic reactions to flea saliva resulting in rashes. Flea bites generally result in the formation of a slightly raised, swollen, itching spot with a single puncture point at the center. Fleas can also lead to hair loss as a result of frequent scratching and biting by the animal, and can cause anemia in extreme cases. Spreaders... of disease: However, fleas can also act as a vector for disease. One possible example of this was the bubonic plague, which may have been transmitted between rodents and humans. Murine typhus (endemic typhus) fever, and in some cases tapeworms can also be transmitted by fleas. Fleas pass through a complete life cycle consisting of egg, larva, pupa and adult. Completion of the life cycle from egg to adult varies from two weeks to eight months depending on the temperature, humidity, food, and species. Normally after a blood meal, the female flea lays about 15 to 20 eggs per day — up to 600 in its lifetime — usually on the host (dogs, cats, rats, rabbits, mice, squirrels, chipmunks, raccoons, opossums, foxes, chickens, humans, etc.). Eggs loosely laid in the hair coat drop out almost anywhere, especially where the host rests, sleeps or nests (rugs, carpets, upholstered furniture, cat or dog boxes, kennels, sand boxes, etc.). Eggs hatch between two days to two weeks into larvae found indoors in and along floor cracks, crevices, along baseboards, under rug edges and in furniture or beds. Outdoor development occurs in sandy gravel soils (moist sand boxes, dirt crawlspace under the house, under shrubs, etc.) where the host may rest or sleep. Sand and gravel are very suitable for larval development which is the reason fleas are erroneously called "sand fleas." Larvae are blind, avoid light, pass through three larval instars and take a week to several months to develop. Their food consists of digested blood from adult flea feces, dead skin, hair, feathers, and other organic debris; larvae do not suck blood. Pupae mature to adulthood within a silken cocoon woven by the larva to which pet hair, carpet fiber, dust, grass cuttings, and other debris adheres. In about five to fourteen days, adult fleas emerge or may remain resting in the cocoon until the detection of vibration (pet and people movement), pressure (host animal lying down on them), heat, noise, or carbon dioxide (meaning a potential blood source is near). Most fleas overwinter in the larval or pupal stage with survival and growth best during warm, moist winters and spring. "Flea season" is traditionally at the end of summer and in the early fall, but in warmer areas can last year round.

Fleas
Fleas








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