Level Pre-A Main Concept: Poisonous animals have poison in their bodies. Picture Activity Point out the different poisonous animals. Discuss with students that there are many different types of poisonous animals, including land animals and water animals, spiders, insects, reptiles, and amphiblans. ...
▲ Pufferfish can also make a strong poison(毒素) from the food they eat. This poison can be very dangerous, even in large animals and humans. One pufferfish can have enough poison to kill 40 people. That's scary!Although pufferfish can be dangerous, people have been eating them for a ...
This poison can be very dangerous, even to large animals and humans. One pufferfish can have enough poison to kill30 people. That's scary!Although pufferfish can be dangerous, people have been eating them for a long time. In Japan pufferfish dishes are very popular. But only chefs(厨师) ...
Meanwhile, poison dart frogs have also evolved resistance to their own toxins, but through a different mechanism. These tiny animals defend themselves using hundreds of bitter-tasting compounds called alkaloids that they accumulate from...
Ⅵ①There may have been something specific about the poison dart frogs' ancestors that made them predisposed to defend themselves using poison. ②Or it could be largely down to luck, says Summers. Ⅶ①Whatever the truth, nowadays t...
While many toxic birds get their poisons from their diet, the Eurasian hoopoe (Upupa epops)has its own poison factory. Birds have a gland over their tails called the uropygial gland, which normally makes oils that the animals use to preen their feathers. In Eurasian hoopoes, this gland is ...
Have you ever heard of animals that can puffer up(膨胀)? One such animal is the pufferfish! There are over 136 kinds of pufferfish living in waters around the world. They can be as short as 2.5 cm or as long as 1m.When there's danger, pufferfish will fill their stomachs(腹部) with...
You should wash your hands quickly in cold water.poison ivy The chickweed(繁缕) can live in cold and windy places. Its leaves have tiny hairs that help it stay warm. The plant grows on rocky hills. Its roots(根) are short because they can grow down into the hard ground. 3. E ....
This venom of putter fish is1200 times more dangerous than cyanide. To be precise, venom of a single puffer fish could kill up to 30 adult men.Scientists estimated that even the larvae of puffer fish contains small amounts of poison. Amazingly, in Japanese like to have the meat of puffer...
It's often said that man is the only animal who kills for fun, but that's actually not true. Animals that thrill kill are actually pretty common; scientists ...