Răspuns :
Răspuns:
The flying frog is a rare species that only comes down from its tree to mate. Also known as the parachute frog, this species has strong membranes in between its fingers and toes. Scientists originally thought that these webbed digits were used for swimming, because that’s a normal thing for frogs to do, so they were surprised to see the frogs gliding from tree to tree to avoid predators. The longest distance a flying frog has been observed to leap was over 15 meters, just enough to make it to another tree or even to the ground. In addition to its webbed digits, the yellow-green amphibian’s oversize padded toes help it stick to the trees for a more secure landing, much like geckos.
Explicație:
Răspuns:
rom the sheep parts hidden in your soap, to the fishy ingredient in your favourite pint, the bits of the animals that do not make it to our dinner plates often end up being turned into products we use everyday.
This is the weird and wonderful world of animal by-products, where industrious companies have devised clever ways of taking the inedible parts of animals like cows, pigs and sheep and using them to make covetable consumer items.
One such firm in Norfolk collects cow intestines by the bucketful from local abattoirs and turns them into the kind of natural gut strings favoured by many of the world's top tennis players.
"It takes about four cow's guts to string the average racquet," production manager Rosina Russell explains.
To produce the strings, the cow guts are cleaned and cut into 40ft strands before being chemically treated to preserve them.
Each string is made up of 15 individual strands which are spun very tightly together to coalesce them, before being dried out in a humid room to prevent cracking.
"With synthetic string, once it's in the racquet and is hit by a ball, it will stretch and stay stretched, but because gut has a natural memory, it always tries to return to its original form, therefore absorbing the shock a lot more and reducing the risk of tennis elbow."