On the contrary, we students have far more than you.” With a smile, the teacher drew two circles—one as large as a big wheel, the other smaller. “Of course, I’ve learned much more. But a teacher does not necessarily have fewer questions than his students. Now, look at these ...
Most sharks are built in such a way, so that they can catch their prey and not chase it. The sharks of the Alopias genus are exceptional in this respect, as they have a very elongated upper tail fin that is as long as the shark’s body. It serves as a stunning weapon – when the...
Sharks even have vibration sensors in their skin. Even something moves near the shark, tubes pick up the pressure changes and hairs inside the tubes send signals to the brain. This extra sense allows a shark to turn quickly and attack again. ...
A. Must of the species are not particularly cruel. B. Sharks have lived on earth for more than 180 million years. C. The great white is the largest and cruelest of all animals known to attack humans. D. Some sharks can wear out a full set of teeth in less than 6 months. E. One...
The Great White, Tiger, Bull, Black Tip and Dusky sharks are known for being aggressive and have attacked humans. But the rest, from the giant but gentle Whale shark to the meek Zebra shark, are all placid creatures that are no threat to humans whatsoever. ...
Why have classified advertisements changed in appearance, according to the writer A.Because people no longer want headlines and pictures.B.Because real estate advertising is particularly truthful now.C.Because the increase in the number of such advertisements means they have to be smaller now.D....
"Shark brains are very similar to ours in that they have two hemispheres, each specialised in analysing specific information. Brain lateralisation is like having a dual processor computer: it allows the brain to process information more efficiently," said lead author Catarina Vila-Pouca, from the...
Additional developmental stages were described for the bamboo shark, while the later stages in catshark usually last longer, resulting ultimately in the bamboo shark hatching several weeks earlier than the catshark (Fig. 1). However, all comparisons have been based on external features only up to ...
“Sharks have poor eye sight.” The underwater vision of sharks is about 10 times better than of humans. Sharks can also see colours. “Eating shark meat makes you more aggressive.” There is no scientific proof to confirm this. Unfortunately to many, shark meat is very appetising due to...
Delphinid skin has unique polymodal axon bundles that project into the epidermis, perhaps a factor in their uniquely fast response, which is 10 × faster than humans. Their primary reaction to tagging is to abduct the flippers and roll the fin out of the TADpole holster. This device has...