Toad eggs adhere in and out of wate
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Email132. Organisms use unidirectional friction to hold spines in place.
Sea urchin, (Strongylocentrotus franscicanus), spines are embedded passively in those unfortunate enough to step on one, or foolish enough to attack one. If threatened, a porcupine, (Erethizon dorsatum), lodges quills forcefully into anything that...
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134. Rabbits build pile of droppings.
"Rabbits create special latrines made of pile upon pile of droppings. These act as scent-marking information posts, as well as hygienically separating food from feces." (Engel 2002:131)
135. Hardened bubbles provide protection: foam-nesting frog
"Several tropical frogs, known as foam-nesters, also build a nest of bubbles. The mother exudes a fluid and beats it into microscopic bubbles with her hind legs. She then lays her eggs inside, and her mate, who has clung to her back througho...
136. hughdavis73
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138. Cone scales are humidity-sensitive: pine
"Dr Jeronimidis is now taking this concept further by using adaptive materials that flex in response to the level of moisture in the air—an idea borrowed from the way pine-cones open and close. Using a cellulose-like fibre composite, he has ...
139. nelsonshaw71
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140. Baleen plates filter food: blue whale
"One group of whales has specialised in feeding on tiny shrimp-like crustaceans, krill, which swarm in vast clouds in the sea. Just as teeth are of no value to mammals feeding on ants, so they are no use to those eating krill. So these whales, lik...
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