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BBC Nature - Adaptations and behaviours

BBC Nature - Adaptations and behaviours

http://www.bbc.co.uk/nature/adaptations

Related:  Adaptations

Variations and Adaptations Students discover that variation in plants allows some varieties to survive in near-drought conditions. Next, students learn that different types of rabbits prefer to eat different varieties of plants. Students make the connection between rainfall amount and the rabbit population's ability to survive by thinking first about rainfall and plants, then about plants and rabbits. Evolution De tidigaste organismerna var encelliga och levde för tre och en halv miljarder år sedan. Alla organismer har genomgått en evolution och skillnaderna mellan dem beror på gradvisa anpassningar till olika livsmiljöer. Evolutionära förändringar har oftast lett till mer komplexa former men ibland har organismer förenklats, till exempel parasiter. Med evolutionsteorin kunde Charles Darwin förklara hur olika arter av växter och djur har förändrats och utvecklats sedan livet började på jorden. Av allt liv som funnits har 99,9% dött ut.

How Do Flamingos Stand on One Leg? Today’s Wonder of the Day was inspired by Bob. Bob Wonders, “How can flamingos balance with one leg?” Thanks for WONDERing with us, Bob! We were getting ready to watch the sun set over the Wonderopolis waterfront the other day when we overheard an interesting conversation between a sea gull and a flamingo: Sea Gull: Hey there! Galapagos: Livets början Galápagosöarnas unika växt- och djurliv fascinerade Charles Darwin innan han skrev sin bok om arternas uppkomst och dagens vetenskapsmän fortsätter att göra unika upptäckter när de utforskar ögruppens evolutionära historia. David Attenborough berättar historien om hur den lilla ögruppen mitt ute i Stilla havet skapades ur havet för fyra miljoner år sedan och utvecklade en fascinerande flora och fauna och endemiska djurarter. Här kan du skapa egna klipp ur programmet Hjälp Stäng 1.

Why bluetongue lizards’ tongues are blue Bluetongue lizards use their tongues as a last-ditch effort to avoid being eaten, according to the latest research from the Lizard Lab at Macquarie University in Sydney. Other videos and images at The base of their tongue is particularly bright under UV light – which birds can see clearly. The lizard relies on camouflage to avoid hawks and other predators.

Arctic Unit Week 1 This was meant to be our first January unit, but lack of routine and school was getting to us so we went ahead and started a week early. First we looked for the Arctic Circle on our globe and talked about the different countries that make up the Arctic land. I pointed out the Arctic Ocean. (We haven’t really talked about the names of the oceans yet. Does anyone have a good song for that?) The blue-tongued skink scares away predators with its horrific UV tongue When cornered by predators, some animals use "deimatic displays" to scare their stalkers into leaving them alone. These are surprising displays — like moths that have eyespots on their wings and octopuses that squirt out jets of water — actions and details intended to momentarily startle the predator. The blue-tongued skink has a colorful variation on this theme. When attacked, the lizard opens its mouth wide and reveals its bright blue, ultraviolet-reflective tongue. The flash of color startles predators, often giving the skink a chance to escape.

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